diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8707b725f..59bba6a23 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -72,7 +72,6 @@ jobs:
     runs-on: ${{ matrix.runs-on }}
     env:
       ENVIRONMENT: testing
-      LIBRETIME_LOG_DIR: /tmp/log/libretime
     steps:
       - uses: actions/checkout@v2
 
@@ -103,10 +102,7 @@ jobs:
             ${{ runner.os }}-composer-
 
       - name: Run tests
-        run: |
-          sudo mkdir -p "$LIBRETIME_LOG_DIR"
-          sudo chown runner:runner "$LIBRETIME_LOG_DIR"
-          make test
+        run: make test
         working-directory: legacy
 
   # Start lint the code without failing the entire workflow, should be merged
diff --git a/legacy/application/Bootstrap.php b/legacy/application/Bootstrap.php
index 4b8e6c051..68a494f1d 100644
--- a/legacy/application/Bootstrap.php
+++ b/legacy/application/Bootstrap.php
@@ -1,24 +1,23 @@
 <?php
 
-require_once CONFIG_PATH . 'conf.php';
+require_once 'preload.php';
+
 $CC_CONFIG = Config::getConfig();
 
-require_once CONFIG_PATH . 'ACL.php';
+require_once CONFIG_PATH . '/ACL.php';
 
 // Since we initialize the database during the configuration check,
 // check the $configRun global to avoid reinitializing unnecessarily
 if (!isset($configRun) || !$configRun) {
-    Propel::init(CONFIG_PATH . 'airtime-conf-production.php');
+    Propel::init(PROPEL_CONFIG_FILEPATH);
 }
 
-require_once CONFIG_PATH . 'constants.php';
-
-Logging::setLogPath(LIBRETIME_LOG_DIR . '/legacy.log');
+Logging::setLogPath(LIBRETIME_LOG_FILEPATH);
 
 Zend_Session::setOptions(['strict' => true]);
 Config::setAirtimeVersion();
 
-require_once CONFIG_PATH . 'navigation.php';
+require_once CONFIG_PATH . '/navigation.php';
 
 Zend_Validate::setDefaultNamespaces('Zend');
 
diff --git a/legacy/application/airtime-boot.php b/legacy/application/airtime-boot.php
index f5a54f804..76a181af3 100644
--- a/legacy/application/airtime-boot.php
+++ b/legacy/application/airtime-boot.php
@@ -27,56 +27,46 @@ function exception_error_handler($errno, $errstr, $errfile, $errline)
 
 set_error_handler('exception_error_handler');
 
-// Define application environment
-defined('APPLICATION_ENV')
-    || define('APPLICATION_ENV', (getenv('APPLICATION_ENV') ? getenv('APPLICATION_ENV') : 'production'));
-
-defined('VERBOSE_STACK_TRACE')
-    || define('VERBOSE_STACK_TRACE', (getenv('VERBOSE_STACK_TRACE') ? getenv('VERBOSE_STACK_TRACE') : true));
-
 // Ensure library/ is on include_path
 set_include_path(implode(PATH_SEPARATOR, [
     get_include_path(),
     realpath(LIB_PATH),
 ]));
 
-set_include_path(APPLICATION_PATH . 'common' . PATH_SEPARATOR . get_include_path());
-set_include_path(APPLICATION_PATH . 'common/enum' . PATH_SEPARATOR . get_include_path());
-set_include_path(APPLICATION_PATH . 'common/interface' . PATH_SEPARATOR . get_include_path());
+set_include_path(APPLICATION_PATH . '/common' . PATH_SEPARATOR . get_include_path());
+set_include_path(APPLICATION_PATH . '/common/enum' . PATH_SEPARATOR . get_include_path());
+set_include_path(APPLICATION_PATH . '/common/interface' . PATH_SEPARATOR . get_include_path());
 
 //Propel classes.
-set_include_path(APPLICATION_PATH . 'models' . PATH_SEPARATOR . get_include_path());
+set_include_path(APPLICATION_PATH . '/models' . PATH_SEPARATOR . get_include_path());
 
 //Controller plugins.
-set_include_path(APPLICATION_PATH . 'controllers' . PATH_SEPARATOR . get_include_path());
+set_include_path(APPLICATION_PATH . '/controllers' . PATH_SEPARATOR . get_include_path());
 
 //Controller plugins.
-set_include_path(APPLICATION_PATH . 'controllers/plugins' . PATH_SEPARATOR . get_include_path());
+set_include_path(APPLICATION_PATH . '/controllers/plugins' . PATH_SEPARATOR . get_include_path());
 
 //Services.
-set_include_path(APPLICATION_PATH . '/services/' . PATH_SEPARATOR . get_include_path());
+set_include_path(APPLICATION_PATH . '/services' . PATH_SEPARATOR . get_include_path());
 
 //cloud storage directory
 set_include_path(APPLICATION_PATH . '/cloud_storage' . PATH_SEPARATOR . get_include_path());
 
 //Upgrade directory
-set_include_path(APPLICATION_PATH . '/upgrade/' . PATH_SEPARATOR . get_include_path());
+set_include_path(APPLICATION_PATH . '/upgrade' . PATH_SEPARATOR . get_include_path());
 
 //Common directory
-set_include_path(APPLICATION_PATH . '/common/' . PATH_SEPARATOR . get_include_path());
-
-//Composer's autoloader
-require_once 'autoload.php';
+set_include_path(APPLICATION_PATH . '/common' . PATH_SEPARATOR . get_include_path());
 
 /** Zend_Application */
 $application = new Zend_Application(
     APPLICATION_ENV,
-    CONFIG_PATH . 'application.ini',
+    CONFIG_PATH . '/application.ini',
     true
 );
 
-require_once APPLICATION_PATH . 'logging/Logging.php';
-Logging::setLogPath(LIBRETIME_LOG_DIR . '/legacy.log');
+require_once APPLICATION_PATH . '/logging/Logging.php';
+Logging::setLogPath(LIBRETIME_LOG_FILEPATH);
 Logging::setupParseErrorLogging();
 
 // Create application, bootstrap, and run
diff --git a/legacy/application/cloud_storage/ProxyStorageBackend.php b/legacy/application/cloud_storage/ProxyStorageBackend.php
index 64fa81ec8..d34c50d12 100644
--- a/legacy/application/cloud_storage/ProxyStorageBackend.php
+++ b/legacy/application/cloud_storage/ProxyStorageBackend.php
@@ -17,7 +17,7 @@ class ProxyStorageBackend extends StorageBackend
     {
         $CC_CONFIG = Config::getConfig();
 
-        // The storage backend in the airtime.conf directly corresponds to
+        // The storage backend in the config file directly corresponds to
         // the name of the class that implements it, so we can create the
         // right backend object dynamically:
         if ($storageBackend == 'file') {
diff --git a/legacy/application/configs/airtime-conf-production.php b/legacy/application/configs/airtime-conf-production.php
index be89c9da5..a01c29cba 100644
--- a/legacy/application/configs/airtime-conf-production.php
+++ b/legacy/application/configs/airtime-conf-production.php
@@ -5,7 +5,7 @@
 
 /* The original name of this file is airtime-conf.php but since we need to make custom changes
  * to it I've renamed it so that our changes aren't removed everytime we regenerate a database schema.
- * our custom changes requires the database parameters to be loaded from /etc/airtime/airtime.conf so
+ * our custom changes requires the database parameters to be loaded from the config file so
  * that the user can customize these.
  */
 
diff --git a/legacy/application/configs/conf.php b/legacy/application/configs/conf.php
index cb9fd5f2c..f2818e30c 100644
--- a/legacy/application/configs/conf.php
+++ b/legacy/application/configs/conf.php
@@ -1,29 +1,18 @@
 <?php
-/* THIS FILE IS NOT MEANT FOR CUSTOMIZING.
- * PLEASE EDIT THE FOLLOWING TO CHANGE YOUR CONFIG:
- * LIBRETIME_CONF_DIR/airtime.conf
- */
 
-require_once __DIR__ . '/constants.php';
+// THIS FILE IS NOT MEANT FOR CUSTOMIZING.
 
 class Config
 {
     private static $CC_CONFIG;
-    private static $rootDir;
 
     public static function loadConfig()
     {
-        self::$rootDir = __DIR__ . '/../..';
-        $CC_CONFIG = [
-            // ================================================ storage configuration
-            'rootDir' => self::$rootDir,
-        ];
-
-        //In the unit testing environment, LIBRETIME_CONF_DIR will our local airtime.conf in legacy/application/test/conf:
-        $filename = isset($_SERVER['AIRTIME_CONF']) ? $_SERVER['AIRTIME_CONF'] : LIBRETIME_CONF_DIR . '/airtime.conf';
-
+        $filename = $_SERVER['LIBRETIME_CONFIG_FILEPATH'] ?? LIBRETIME_CONFIG_FILEPATH;
         $values = parse_ini_file($filename, true);
 
+        $CC_CONFIG = [];
+
         // Name of the web server user
         $CC_CONFIG['webServerUser'] = $values['general']['web_server_user'];
         $CC_CONFIG['rabbitmq'] = $values['rabbitmq'];
@@ -97,7 +86,7 @@ class Config
 
     public static function setAirtimeVersion()
     {
-        $version = @file_get_contents(self::$rootDir . '/../VERSION');
+        $version = @file_get_contents(dirname(ROOT_PATH) . '/VERSION');
         if (!$version) {
             // fallback to constant from constants.php if no other info is available
             $version = LIBRETIME_MAJOR_VERSION;
diff --git a/legacy/application/configs/config-check.php b/legacy/application/configs/config-check.php
index 6b4e4f631..fcf04a428 100644
--- a/legacy/application/configs/config-check.php
+++ b/legacy/application/configs/config-check.php
@@ -140,7 +140,7 @@ $result = $r1 && $r2;
                                 ?>">
                             Make sure you aren't missing any of the Postgres dependencies in the table above.
                             If your dependencies check out, make sure your database configuration settings in
-                            <code>/etc/airtime.conf</code> are correct and the Airtime database was installed correctly.
+                            <code><?php echo LIBRETIME_CONFIG_FILEPATH; ?></code> are correct and the Airtime database was installed correctly.
                         <?php
                             }
                         ?>
@@ -158,7 +158,7 @@ $result = $r1 && $r2;
                         <?php
                         } else {
                             ?>">
-                            Make sure RabbitMQ is installed correctly, and that your settings in /etc/airtime/airtime.conf
+                            Make sure RabbitMQ is installed correctly, and that your settings in <?php echo LIBRETIME_CONFIG_FILEPATH; ?>
                             are correct. Try using <code>sudo rabbitmqctl list_users</code> and <code>sudo rabbitmqctl list_vhosts</code>
                             to see if the airtime user (or your custom RabbitMQ user) exists, then checking that
                             <code>sudo rabbitmqctl list_exchanges</code> contains entries for airtime-pypo and airtime-uploads.
diff --git a/legacy/application/configs/constants.php b/legacy/application/configs/constants.php
index 822889bbc..08d03a5c2 100644
--- a/legacy/application/configs/constants.php
+++ b/legacy/application/configs/constants.php
@@ -1,5 +1,34 @@
 <?php
 
+// Path constants
+define('ROOT_PATH', dirname(__DIR__, 2));
+define('LIB_PATH', ROOT_PATH . '/library');
+define('BUILD_PATH', ROOT_PATH . '/build');
+define('SETUP_PATH', BUILD_PATH . '/airtime-setup');
+define('APPLICATION_PATH', ROOT_PATH . '/application');
+define('CONFIG_PATH', APPLICATION_PATH . '/configs');
+define('VENDOR_PATH', ROOT_PATH . '/vendor');
+
+define('SAMPLE_CONFIG_FILEPATH', BUILD_PATH . '/airtime.example.conf');
+define('PROPEL_CONFIG_FILEPATH', CONFIG_PATH . '/airtime-conf-production.php');
+
+// Define application environment
+defined('APPLICATION_ENV') || define('APPLICATION_ENV', getenv('APPLICATION_ENV') ?: 'production');
+defined('VERBOSE_STACK_TRACE') || define('VERBOSE_STACK_TRACE', getenv('VERBOSE_STACK_TRACE') ?? true);
+
+// Project constants
+define('LIBRETIME_LOG_DIR', getenv('LIBRETIME_LOG_DIR') ?: '/var/log/libretime');
+define('LIBRETIME_LOG_FILEPATH', getenv('LIBRETIME_LOG_FILEPATH') ?: LIBRETIME_LOG_DIR . '/legacy.log');
+
+define('LIBRETIME_CONFIG_DIR', getenv('LIBRETIME_CONFIG_DIR') ?: '/etc/airtime');
+define('LIBRETIME_CONF_DIR', LIBRETIME_CONFIG_DIR); // Deprecated
+define('LIBRETIME_CONFIG_FILEPATH', getenv('LIBRETIME_CONFIG_FILEPATH') ?: LIBRETIME_CONFIG_DIR . '/airtime.conf');
+
+// Installer
+define('INSTALLER_CONFIG_FILEPATH', LIBRETIME_CONFIG_DIR . '/airtime.conf.temp');
+define('INSTALLER_DEFAULT_STORAGE_PATH', '/srv/libretime/storage');
+
+// Legacy constants
 define('PRODUCT_NAME', 'LibreTime');
 define('PRODUCT_SITE_URL', 'http://libretime.org');
 
@@ -34,10 +63,6 @@ define('AIRTIME_API_VERSION', '1.1');
 // XXX: it's important that we upgrade this on major version bumps, usually users get more exact info from VERSION in airtime root dir
 define('LIBRETIME_MAJOR_VERSION', '3');
 
-// grab values from env (i'll do this everywhere with a small function if we like it)
-define('LIBRETIME_CONF_DIR', getenv('LIBRETIME_CONF_DIR') ? getenv('LIBRETIME_CONF_DIR') : '/etc/airtime');
-define('LIBRETIME_LOG_DIR', getenv('LIBRETIME_LOG_DIR') ? getenv('LIBRETIME_LOG_DIR') : '/var/log/libretime');
-
 // Defaults
 define('DEFAULT_LOGO_PLACEHOLDER', 1);
 define('DEFAULT_LOGO_FILE', 'images/airtime_logo.png');
@@ -106,9 +131,6 @@ define('UI_PLAYLISTCONTROLLER_OBJ_SESSNAME', 'PLAYLISTCONTROLLER_OBJ');
 /*define('UI_PLAYLIST_SESSNAME', 'PLAYLIST');
 define('UI_BLOCK_SESSNAME', 'BLOCK');*/
 
-//Sentry error logging
-define('SENTRY_CONFIG_PATH', LIBRETIME_CONF_DIR . '/sentry.airtime_web.ini');
-
 //TuneIn integration
 define('TUNEIN_API_URL', 'http://air.radiotime.com/Playing.ashx');
 
diff --git a/legacy/application/configs/db-conf.php b/legacy/application/configs/db-conf.php
deleted file mode 100644
index 8cb1791db..000000000
--- a/legacy/application/configs/db-conf.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-/* This file is only needed during upgrades when we need the database parameters from /etc/airtime/airtime.conf.
- * The reason we don't just use conf.php is because conf.php may try to load configuration parameters that aren't
- * yet available because airtime.conf hasn't been updated yet. This situation ends up throwing a lot of errors to stdout.
- * airtime*/
-
-require_once 'conf.php';
-
-$CC_CONFIG = Config::getConfig();
diff --git a/legacy/application/controllers/plugins/PageLayoutInitPlugin.php b/legacy/application/controllers/plugins/PageLayoutInitPlugin.php
index 07ddc8df0..ea203e643 100644
--- a/legacy/application/controllers/plugins/PageLayoutInitPlugin.php
+++ b/legacy/application/controllers/plugins/PageLayoutInitPlugin.php
@@ -241,7 +241,7 @@ class PageLayoutInitPlugin extends Zend_Controller_Plugin_Abstract
     protected function _initViewHelpers()
     {
         $view = $this->_bootstrap->getResource('view');
-        $view->addHelperPath(APPLICATION_PATH . 'views/helpers', 'Airtime_View_Helper');
+        $view->addHelperPath(APPLICATION_PATH . '/views/helpers', 'Airtime_View_Helper');
     }
 
     protected function _initTitle()
diff --git a/legacy/application/layouts/scripts/layout.phtml b/legacy/application/layouts/scripts/layout.phtml
index 12f3c3eeb..808479d1f 100644
--- a/legacy/application/layouts/scripts/layout.phtml
+++ b/legacy/application/layouts/scripts/layout.phtml
@@ -64,7 +64,7 @@
             <?php echo _("Dashboard") ?>
         </a>
     </div>
-    <?php $subnavPrefix = "/showbuilder"; require_once APPLICATION_PATH . "views/scripts/partialviews/dashboard-sub-nav.php"; ?>
+    <?php $subnavPrefix = "/showbuilder"; require_once APPLICATION_PATH . "/views/scripts/partialviews/dashboard-sub-nav.php"; ?>
     <div class="media_type_selector dashboard_sub_nav" data-selection-id="<?php echo MediaType::PODCAST ?>">
         <a href="<?php echo $subnavPrefix; ?>#podcasts">
             <span class="selector-name"><i class='icon-headphones icon-white'></i><?php echo _("Podcasts") ?></span>
diff --git a/legacy/application/modules/rest/controllers/PodcastController.php b/legacy/application/modules/rest/controllers/PodcastController.php
index 234514689..d670e629f 100644
--- a/legacy/application/modules/rest/controllers/PodcastController.php
+++ b/legacy/application/modules/rest/controllers/PodcastController.php
@@ -8,7 +8,7 @@ class Rest_PodcastController extends Zend_Rest_Controller
 
         // Remove reliance on .phtml files to render requests
         $this->_helper->viewRenderer->setNoRender(true);
-        $this->view->setScriptPath(APPLICATION_PATH . 'views/scripts/');
+        $this->view->setScriptPath(APPLICATION_PATH . '/views/scripts/');
     }
 
     /**
diff --git a/legacy/application/preload.php b/legacy/application/preload.php
new file mode 100644
index 000000000..7e36bae90
--- /dev/null
+++ b/legacy/application/preload.php
@@ -0,0 +1,7 @@
+<?php
+
+require_once __DIR__ . '/configs/constants.php';
+
+require_once VENDOR_PATH . '/autoload.php';
+
+require_once CONFIG_PATH . '/conf.php';
diff --git a/legacy/application/views/scripts/showbuilder/builderDialog.phtml b/legacy/application/views/scripts/showbuilder/builderDialog.phtml
index b6e2317fa..1f82b6800 100644
--- a/legacy/application/views/scripts/showbuilder/builderDialog.phtml
+++ b/legacy/application/views/scripts/showbuilder/builderDialog.phtml
@@ -1,7 +1,7 @@
 <div><!-- jQuery UI changes the styling on the outermost div; use a blank div so as not to break the .wrapper styling-->
     <div class="wrapper">
         <div id="media_selector_wrapper">
-            <?php $subnavPrefix = ""; require_once APPLICATION_PATH . "views/scripts/partialviews/dashboard-sub-nav.php"; ?>
+            <?php $subnavPrefix = ""; require_once APPLICATION_PATH . "/views/scripts/partialviews/dashboard-sub-nav.php"; ?>
         </div>
         <?php echo $this->csrf ?>
 
diff --git a/legacy/build/airtime-setup/forms/database-settings.php b/legacy/build/airtime-setup/forms/database-settings.php
index 344017679..ffdb2f30e 100644
--- a/legacy/build/airtime-setup/forms/database-settings.php
+++ b/legacy/build/airtime-setup/forms/database-settings.php
@@ -1,9 +1,9 @@
 <?php
-    $tempConfigPath = '/etc/airtime/airtime.conf.tmp';
-    if (file_exists($tempConfigPath)) {
-        $airtimeConfig = parse_ini_file($tempConfigPath, true);
-        $db = $airtimeConfig['database'];
-    }
+$tempConfigPath = INSTALLER_CONFIG_FILEPATH;
+if (file_exists($tempConfigPath)) {
+    $airtimeConfig = parse_ini_file($tempConfigPath, true);
+    $db = $airtimeConfig['database'];
+}
 ?>
 
 <form action="#" role="form" id="dbSettingsForm">
diff --git a/legacy/build/airtime-setup/forms/finish-settings.php b/legacy/build/airtime-setup/forms/finish-settings.php
index 325c3105c..2f119f1d1 100644
--- a/legacy/build/airtime-setup/forms/finish-settings.php
+++ b/legacy/build/airtime-setup/forms/finish-settings.php
@@ -11,16 +11,16 @@
 sudo systemctl start libretime-api
 sudo systemctl start libretime-celery
 sudo systemctl start libretime-liquidsoap
-sudo systemctl start libretime-playout</pre
+sudo systemctl start libretime-playout</pre>
     <p>
         Click "Done!" to bring up the Libretime configuration checklist; if your configuration is all green,
         you're ready to get started with your personal Libretime station!
     </p>
     <p>
-        If you need to re-run the web installer, just remove <code>/etc/airtime/airtime.conf</code>.
+        If you need to re-run the web installer, just remove <code><?php echo LIBRETIME_CONFIG_FILEPATH; ?></code>.
     </p>
     <div>
-        <input type="submit" formtarget="finishSettingsForm" class="btn btn-primary btn-next" value="Done!"/>
+        <input type="submit" formtarget="finishSettingsForm" class="btn btn-primary btn-next" value="Done!" />
     </div>
 </form>
 
diff --git a/legacy/build/airtime-setup/forms/rabbitmq-settings.php b/legacy/build/airtime-setup/forms/rabbitmq-settings.php
index aef86ea8c..89dc2f74d 100644
--- a/legacy/build/airtime-setup/forms/rabbitmq-settings.php
+++ b/legacy/build/airtime-setup/forms/rabbitmq-settings.php
@@ -1,9 +1,9 @@
 <?php
-    $tempConfigPath = '/etc/airtime/airtime.conf.tmp';
-    if (file_exists($tempConfigPath)) {
-        $airtimeConfig = parse_ini_file($tempConfigPath, true);
-        $rmq = $airtimeConfig['rabbitmq'];
-    }
+$tempConfigPath = INSTALLER_CONFIG_FILEPATH;
+if (file_exists($tempConfigPath)) {
+    $airtimeConfig = parse_ini_file($tempConfigPath, true);
+    $rmq = $airtimeConfig['rabbitmq'];
+}
 ?>
 
 <form action="#" role="form" id="rmqSettingsForm">
diff --git a/legacy/build/airtime-setup/load.php b/legacy/build/airtime-setup/load.php
index 1f68e090e..4502274b5 100644
--- a/legacy/build/airtime-setup/load.php
+++ b/legacy/build/airtime-setup/load.php
@@ -92,7 +92,7 @@ function checkDatabaseConfiguration()
  */
 function configureDatabase()
 {
-    Propel::init(CONFIG_PATH . 'airtime-conf-production.php');
+    Propel::init(PROPEL_CONFIG_FILEPATH);
 }
 
 /**
@@ -102,11 +102,11 @@ function configureDatabase()
  */
 function checkRMQConnection()
 {
-    // Check for airtime.conf in /etc/airtime/ first, then check in the build directory,
-    if (file_exists(AIRTIME_CONFIG_STOR . AIRTIME_CONFIG)) {
-        $ini = parse_ini_file(AIRTIME_CONFIG_STOR . AIRTIME_CONFIG, true);
+    // Check for installed config file first, then check in the build directory,
+    if (file_exists(LIBRETIME_CONFIG_FILEPATH)) {
+        $ini = parse_ini_file(LIBRETIME_CONFIG_FILEPATH, true);
     } else {
-        $ini = parse_ini_file(BUILD_PATH . 'airtime.example.conf', true);
+        $ini = parse_ini_file(SAMPLE_CONFIG_FILEPATH, true);
     }
 
     $conn = new \PhpAmqpLib\Connection\AMQPStreamConnection(
diff --git a/legacy/build/airtime-setup/setup-config.php b/legacy/build/airtime-setup/setup-config.php
index d58fc7031..87ad35a9c 100644
--- a/legacy/build/airtime-setup/setup-config.php
+++ b/legacy/build/airtime-setup/setup-config.php
@@ -1,4 +1,7 @@
 <?php
+
+require_once dirname(__DIR__, 2) . '/application/preload.php';
+
 ?>
 
 <html>
@@ -23,27 +26,27 @@
             <div class="form-slider">
                 <div id="databaseSettings" class="form-wrapper">
                     <?php
-                        require_once SETUP_PATH . 'forms/database-settings.php';
+                        require_once SETUP_PATH . '/forms/database-settings.php';
                     ?>
                 </div>
                 <div id="rabbitmqSettings" class="form-wrapper">
                     <?php
-                        require_once SETUP_PATH . 'forms/rabbitmq-settings.php';
+                        require_once SETUP_PATH . '/forms/rabbitmq-settings.php';
                     ?>
                 </div>
                 <div id="generalSettings" class="form-wrapper">
                     <?php
-                        require_once SETUP_PATH . 'forms/general-settings.php';
+                        require_once SETUP_PATH . '/forms/general-settings.php';
                     ?>
                 </div>
                 <div id="mediaSettings" class="form-wrapper">
                     <?php
-                        require_once SETUP_PATH . 'forms/media-settings.php';
+                        require_once SETUP_PATH . '/forms/media-settings.php';
                     ?>
                 </div>
                 <div id="finishSettings" class="form-wrapper">
                     <?php
-                        require_once SETUP_PATH . 'forms/finish-settings.php';
+                        require_once SETUP_PATH . '/forms/finish-settings.php';
                     ?>
                 </div>
             </div>
diff --git a/legacy/public/index.php b/legacy/public/index.php
index 44855fccc..b5a72d57e 100644
--- a/legacy/public/index.php
+++ b/legacy/public/index.php
@@ -1,5 +1,7 @@
 <?php
 
+require_once dirname(__DIR__) . '/application/preload.php';
+
 $configRun = false;
 $extensions = get_loaded_extensions();
 $airtimeSetup = false;
@@ -13,7 +15,7 @@ function showConfigCheckPage()
         checkConfiguration();
     }
 
-    require_once CONFIG_PATH . 'config-check.php';
+    require_once CONFIG_PATH . '/config-check.php';
 
     exit();
 }
@@ -25,38 +27,20 @@ function isApiCall()
     return strpos($path, 'api') !== false;
 }
 
-// Define application path constants
-define('ROOT_PATH', dirname(__DIR__) . '/');
-define('LIB_PATH', ROOT_PATH . 'library/');
-define('BUILD_PATH', ROOT_PATH . 'build/');
-define('SETUP_PATH', BUILD_PATH . 'airtime-setup/');
-define('APPLICATION_PATH', ROOT_PATH . 'application/');
-define('CONFIG_PATH', APPLICATION_PATH . 'configs/');
-define('VENDOR_PATH', ROOT_PATH . 'vendor/');
-define('REST_MODULE_CONTROLLER_PATH', APPLICATION_PATH . 'modules/rest/controllers/');
-
-define('AIRTIME_CONFIG_STOR', '/etc/airtime/');
-
-define('AIRTIME_CONFIG', 'airtime.conf');
-
 //Rest Module Controllers - for custom Rest_RouteController.php
-set_include_path(REST_MODULE_CONTROLLER_PATH . PATH_SEPARATOR . get_include_path());
+set_include_path(APPLICATION_PATH . '/modules/rest/controllers/' . PATH_SEPARATOR . get_include_path());
 
 // Vendors (Composer, zend-loader is explicitly specified due to https://github.com/zf1/zend-application/pull/2#issuecomment-102599655)
-set_include_path(VENDOR_PATH . PATH_SEPARATOR . VENDOR_PATH . 'zf1s/zend-loader/library/' . PATH_SEPARATOR . get_include_path());
+set_include_path(VENDOR_PATH . PATH_SEPARATOR . VENDOR_PATH . '/zf1s/zend-loader/library/' . PATH_SEPARATOR . get_include_path());
 
 // Ensure library/ is on include_path
 set_include_path(LIB_PATH . PATH_SEPARATOR . get_include_path());
 
-require_once VENDOR_PATH . 'autoload.php';
-
 if (!class_exists('Propel')) {
     exit('Error: Propel not found. Did you install Airtime\'s third-party dependencies with composer? (Check the README.)');
 }
 
-require_once CONFIG_PATH . 'conf.php';
-
-require_once SETUP_PATH . 'load.php';
+require_once SETUP_PATH . '/load.php';
 
 // This allows us to pass ?config as a parameter to any page
 // and get to the config checklist.
@@ -64,16 +48,13 @@ if (array_key_exists('config', $_GET)) {
     showConfigCheckPage();
 }
 
-$filename = isset($_SERVER['AIRTIME_CONF']) ?
-    $_SERVER['AIRTIME_CONF'] : AIRTIME_CONFIG_STOR . AIRTIME_CONFIG;
-
 // If a configuration file exists, forward to our boot script
-if (file_exists($filename)) {
-    require_once APPLICATION_PATH . 'airtime-boot.php';
+if (file_exists(LIBRETIME_CONFIG_FILEPATH)) {
+    require_once APPLICATION_PATH . '/airtime-boot.php';
 }
 // Otherwise, we'll need to run our configuration setup
 else {
     $airtimeSetup = true;
 
-    require_once SETUP_PATH . 'setup-config.php';
+    require_once SETUP_PATH . '/setup-config.php';
 }
diff --git a/legacy/public/setup/database-setup.php b/legacy/public/setup/database-setup.php
index b9b4ed0bf..e963d96f4 100644
--- a/legacy/public/setup/database-setup.php
+++ b/legacy/public/setup/database-setup.php
@@ -8,7 +8,7 @@
  */
 class DatabaseSetup extends Setup
 {
-    // airtime.conf section header
+    // config file section header
     protected static $_section = '[database]';
 
     // Constant form field names for passing errors back to the front-end
@@ -17,7 +17,7 @@ class DatabaseSetup extends Setup
     public const DB_NAME = 'dbName';
     public const DB_HOST = 'dbHost';
 
-    // Array of key->value pairs for airtime.conf
+    // Array of key->value pairs for the config file
     protected static $_properties;
 
     /**
@@ -294,6 +294,6 @@ class DatabaseSetup extends Setup
      */
     private function updateDjangoTables()
     {
-        shell_exec('LIBRETIME_CONFIG_FILEPATH=/etc/airtime/airtime.conf.temp libretime-api migrate');
+        shell_exec('LIBRETIME_CONFIG_FILEPATH=' . INSTALLER_CONFIG_FILEPATH . ' libretime-api migrate');
     }
 }
diff --git a/legacy/public/setup/general-setup.php b/legacy/public/setup/general-setup.php
index 901b2245a..9353d5f42 100644
--- a/legacy/public/setup/general-setup.php
+++ b/legacy/public/setup/general-setup.php
@@ -1,25 +1,5 @@
 <?php
 
-define('CONFIG_PATH', dirname(__DIR__, 2) . '/application/configs/');
-
-require_once dirname(__DIR__, 2) . '/vendor/jooola/propel1/runtime/lib/Propel.php';
-
-require_once CONFIG_PATH . 'conf.php';
-
-require_once dirname(__DIR__, 2) . '/application/models/airtime/CcPref.php';
-
-require_once dirname(__DIR__, 2) . '/application/models/airtime/CcPrefPeer.php';
-
-require_once dirname(__DIR__, 2) . '/application/models/airtime/CcPrefQuery.php';
-
-require_once dirname(__DIR__, 2) . '/application/models/airtime/map/CcPrefTableMap.php';
-
-require_once dirname(__DIR__, 2) . '/application/models/airtime/om/BaseCcPref.php';
-
-require_once dirname(__DIR__, 2) . '/application/models/airtime/om/BaseCcPrefPeer.php';
-
-require_once dirname(__DIR__, 2) . '/application/models/airtime/om/BaseCcPrefQuery.php';
-
 /**
  * User: sourcefabric
  * Date: 08/12/14.
@@ -30,10 +10,10 @@ require_once dirname(__DIR__, 2) . '/application/models/airtime/om/BaseCcPrefQue
  */
 class GeneralSetup extends Setup
 {
-    // airtime.conf section header
+    // config file section header
     protected static $_section = '[general]';
 
-    // Array of key->value pairs for airtime.conf
+    // Array of key->value pairs for the config file
     protected static $_properties;
 
     // Constant form field names for passing errors back to the front-end
@@ -86,8 +66,8 @@ class GeneralSetup extends Setup
     public function setupCorsUrl()
     {
         try {
-            $_SERVER['AIRTIME_CONF'] = AIRTIME_CONF_TEMP_PATH;
-            Propel::init(CONFIG_PATH . 'airtime-conf-production.php');
+            $_SERVER['LIBRETIME_CONFIG_FILEPATH'] = INSTALLER_CONFIG_FILEPATH;
+            Propel::init(PROPEL_CONFIG_FILEPATH);
             $con = Propel::getConnection();
         } catch (Exception $e) {
             self::$message = "Failed to insert Cors URL; database isn't configured properly!";
@@ -104,7 +84,6 @@ class GeneralSetup extends Setup
         try {
             Application_Model_Preference::SetAllowedCorsUrls(self::$cors_url);
             Propel::close();
-            //unset($_SERVER['AIRTIME_CONF']);
         } catch (Exception $e) {
             self::$message = 'Failed to insert ' . self::$cors_url . ' into cc_pref' . $e;
             self::$errors[] = self::CORS_URL;
diff --git a/legacy/public/setup/media-setup.php b/legacy/public/setup/media-setup.php
index 5b564d3bc..57a9d62a6 100644
--- a/legacy/public/setup/media-setup.php
+++ b/legacy/public/setup/media-setup.php
@@ -1,26 +1,5 @@
 <?php
 
-define('CONFIG_PATH', dirname(__DIR__, 2) . '/application/configs/');
-define('DEFAULT_STOR_DIR', '/srv/airtime/stor/');
-
-require_once dirname(__DIR__, 2) . '/vendor/jooola/propel1/runtime/lib/Propel.php';
-
-require_once CONFIG_PATH . 'conf.php';
-
-require_once dirname(__DIR__, 2) . '/application/models/airtime/map/CcMusicDirsTableMap.php';
-
-require_once dirname(__DIR__, 2) . '/application/models/airtime/om/BaseCcMusicDirsQuery.php';
-
-require_once dirname(__DIR__, 2) . '/application/models/airtime/CcMusicDirsQuery.php';
-
-require_once dirname(__DIR__, 2) . '/application/models/airtime/om/BaseCcMusicDirs.php';
-
-require_once dirname(__DIR__, 2) . '/application/models/airtime/CcMusicDirs.php';
-
-require_once dirname(__DIR__, 2) . '/application/models/airtime/om/BaseCcMusicDirsPeer.php';
-
-require_once dirname(__DIR__, 2) . '/application/models/airtime/CcMusicDirsPeer.php';
-
 /**
  * Author: sourcefabric
  * Date: 08/12/14.
@@ -32,7 +11,6 @@ require_once dirname(__DIR__, 2) . '/application/models/airtime/CcMusicDirsPeer.
 class MediaSetup extends Setup
 {
     public const MEDIA_FOLDER = 'mediaFolder';
-    public const LIBRETIME_CONF_FILE_NAME = 'airtime.conf';
 
     public static $path;
     public static $message;
@@ -50,9 +28,9 @@ class MediaSetup extends Setup
     {
         // If the path passed in is empty, set it to the default
         if (strlen(self::$path) == 0) {
-            self::$path = DEFAULT_STOR_DIR;
-            if (!file_exists(DEFAULT_STOR_DIR)) {
-                mkdir(DEFAULT_STOR_DIR, 0755, true);
+            self::$path = INSTALLER_DEFAULT_STORAGE_PATH;
+            if (!file_exists(INSTALLER_DEFAULT_STORAGE_PATH)) {
+                mkdir(INSTALLER_DEFAULT_STORAGE_PATH, 0755, true);
             }
         }
 
@@ -68,10 +46,10 @@ class MediaSetup extends Setup
             self::$errors[] = self::MEDIA_FOLDER;
         }
 
-        // Finalize and move airtime.conf.temp
-        if (file_exists('/etc/airtime/')) {
+        // Finalize and move installer config file to libretime config file
+        if (file_exists(LIBRETIME_CONFIG_DIR)) {
             if (!$this->moveAirtimeConfig()) {
-                self::$message = 'Error moving airtime.conf or deleting /tmp/airtime.conf.temp!';
+                self::$message = 'Error moving or deleting the installer config!';
                 self::$errors[] = 'ERR';
             }
 
@@ -80,7 +58,7 @@ class MediaSetup extends Setup
              * airtime.conf to airtime.conf.tmp during the setup process. Now that we're done,
              * we can rename it to airtime.conf.bak to avoid confusion.
              */
-            $fileName = LIBRETIME_CONF_DIR . '/' . self::LIBRETIME_CONF_FILE_NAME;
+            $fileName = LIBRETIME_CONFIG_FILEPATH;
             $tmpFile = $fileName . '.tmp';
             $bakFile = $fileName . '.bak';
             if (file_exists($tmpFile)) {
@@ -104,8 +82,8 @@ class MediaSetup extends Setup
      */
     public function moveAirtimeConfig()
     {
-        return copy(AIRTIME_CONF_TEMP_PATH, LIBRETIME_CONF_DIR . '/' . self::LIBRETIME_CONF_FILE_NAME)
-            && unlink(AIRTIME_CONF_TEMP_PATH);
+        return copy(INSTALLER_CONFIG_FILEPATH, LIBRETIME_CONFIG_FILEPATH)
+            && unlink(INSTALLER_CONFIG_FILEPATH);
     }
 
     /**
@@ -115,8 +93,8 @@ class MediaSetup extends Setup
     public function setupMusicDirectory()
     {
         try {
-            $_SERVER['AIRTIME_CONF'] = AIRTIME_CONF_TEMP_PATH;
-            Propel::init(CONFIG_PATH . 'airtime-conf-production.php');
+            $_SERVER['LIBRETIME_CONFIG_FILEPATH'] = INSTALLER_CONFIG_FILEPATH;
+            Propel::init(PROPEL_CONFIG_FILEPATH);
             $con = Propel::getConnection();
         } catch (Exception $e) {
             self::$message = "Failed to insert media folder; database isn't configured properly!";
diff --git a/legacy/public/setup/setup-functions.php b/legacy/public/setup/setup-functions.php
index 177fbb49d..8fc546c1b 100644
--- a/legacy/public/setup/setup-functions.php
+++ b/legacy/public/setup/setup-functions.php
@@ -1,13 +1,6 @@
 <?php
 
-define('BUILD_PATH', dirname(__DIR__, 2) . '/build/');
-define('AIRTIME_CONF_TEMP_PATH', '/etc/airtime/airtime.conf.temp');
-define('RMQ_INI_TEMP_PATH', '/tmp/rabbitmq.ini.tmp');
-
-// load autoloader since this files is an entry path see
-// the end of the file for the "server" that is being
-// executed.
-require_once __DIR__ . '/../../vendor/autoload.php';
+require_once dirname(__DIR__, 2) . '/application/preload.php';
 
 /**
  * Class Setup.
@@ -36,11 +29,11 @@ abstract class Setup
      */
     protected function writeToTemp()
     {
-        if (!file_exists(AIRTIME_CONF_TEMP_PATH)) {
-            copy(BUILD_PATH . 'airtime.example.conf', AIRTIME_CONF_TEMP_PATH);
+        if (!file_exists(INSTALLER_CONFIG_FILEPATH)) {
+            copy(SAMPLE_CONFIG_FILEPATH, INSTALLER_CONFIG_FILEPATH);
         }
-        //Logging::info(AIRTIME_CONF_TEMP_PATH);
-        $this->_write(AIRTIME_CONF_TEMP_PATH);
+        //Logging::info(CONFIG_TEMP_FILEPATH);
+        $this->_write(INSTALLER_CONFIG_FILEPATH);
     }
 
     protected function _write($filePath)
diff --git a/legacy/tests/application/bootstrap.php b/legacy/tests/application/bootstrap.php
index e6f160475..9cefaa7ca 100644
--- a/legacy/tests/application/bootstrap.php
+++ b/legacy/tests/application/bootstrap.php
@@ -2,19 +2,7 @@
 
 error_reporting(E_ALL | E_STRICT);
 
-// load composer autoloader
-require_once __DIR__ . '/../../vendor/autoload.php';
-
-// Define path to application directory
-defined('APPLICATION_PATH')
-    || define('APPLICATION_PATH', realpath(dirname(__FILE__) . '/../../application/'));
-
-// Define path to configs directory
-define('CONFIG_PATH', APPLICATION_PATH . '/configs/');
-
-// Define application environment
-defined('APPLICATION_ENV')
-    || define('APPLICATION_ENV', (getenv('APPLICATION_ENV') ? getenv('APPLICATION_ENV') : 'testing'));
+require_once dirname(__DIR__, 2) . '/application/preload.php';
 
 // Ensure library/ is on include_path
 set_include_path(implode(PATH_SEPARATOR, [
@@ -46,9 +34,7 @@ set_include_path(implode(PATH_SEPARATOR, [
     realpath(APPLICATION_PATH . '/../../install_minimal/include'),
 ]));
 
-require_once CONFIG_PATH . '/constants.php';
-
-Logging::setLogPath(LIBRETIME_LOG_DIR . '/legacy.log');
+Logging::setLogPath(LIBRETIME_LOG_FILEPATH);
 
 set_include_path(APPLICATION_PATH . '/common' . PATH_SEPARATOR . get_include_path());
 
@@ -76,8 +62,6 @@ set_include_path(APPLICATION_PATH . '/../tests/application/helpers' . PATH_SEPAR
 //cloud storage files
 set_include_path(APPLICATION_PATH . '/cloud_storage' . PATH_SEPARATOR . get_include_path());
 
-require_once APPLICATION_PATH . '/configs/conf.php';
-
 require_once 'jooola/propel1/runtime/lib/Propel.php';
 Propel::init('../application/configs/airtime-conf-production.php');
 
diff --git a/legacy/tests/application/configs/ConfigTest.php b/legacy/tests/application/configs/ConfigTest.php
index b0617a5cb..57a97aacb 100644
--- a/legacy/tests/application/configs/ConfigTest.php
+++ b/legacy/tests/application/configs/ConfigTest.php
@@ -1,7 +1,5 @@
 <?php
 
-require_once '../application/configs/conf.php';
-
 /**
  * @internal
  * @coversNothing
diff --git a/legacy/tests/application/helpers/TestHelper.php b/legacy/tests/application/helpers/TestHelper.php
index 91792810a..c7922f289 100644
--- a/legacy/tests/application/helpers/TestHelper.php
+++ b/legacy/tests/application/helpers/TestHelper.php
@@ -130,7 +130,7 @@ class TestHelper
 
     public static function setupZendBootstrap()
     {
-        $application = new Zend_Application(APPLICATION_ENV, CONFIG_PATH . 'application.ini');
+        $application = new Zend_Application(APPLICATION_ENV, CONFIG_PATH . '/application.ini');
         $application->bootstrap();
 
         return $application;
diff --git a/legacy/tests/application/models/database/BlockDbTest.php b/legacy/tests/application/models/database/BlockDbTest.php
index 65978f5ec..9d70cee5e 100644
--- a/legacy/tests/application/models/database/BlockDbTest.php
+++ b/legacy/tests/application/models/database/BlockDbTest.php
@@ -1,7 +1,5 @@
 <?php
 
-//require_once "../application/configs/conf.php";
-
 /**
  * @internal
  * @coversNothing
diff --git a/legacy/tests/application/models/database/ScheduleDbTest.php b/legacy/tests/application/models/database/ScheduleDbTest.php
index d00c51658..9842f2da8 100644
--- a/legacy/tests/application/models/database/ScheduleDbTest.php
+++ b/legacy/tests/application/models/database/ScheduleDbTest.php
@@ -1,7 +1,5 @@
 <?php
 
-require_once '../application/configs/conf.php';
-
 /**
  * @internal
  * @coversNothing
diff --git a/legacy/tests/application/models/unit/ScheduleUnitTest.php b/legacy/tests/application/models/unit/ScheduleUnitTest.php
index 653a37920..111572751 100644
--- a/legacy/tests/application/models/unit/ScheduleUnitTest.php
+++ b/legacy/tests/application/models/unit/ScheduleUnitTest.php
@@ -1,7 +1,5 @@
 <?php
 
-//require_once "../application/configs/conf.php";
-
 /**
  * @internal
  * @coversNothing
diff --git a/legacy/tests/conf/testing/airtime.conf b/legacy/tests/conf/testing/airtime.conf
deleted file mode 100644
index a5926c3f2..000000000
--- a/legacy/tests/conf/testing/airtime.conf
+++ /dev/null
@@ -1,28 +0,0 @@
-[database]
-
-host = localhost
-dbname = libretime_test
-dbuser = libretime
-dbpass = libretime
-
-[rabbitmq]
-host = 127.0.0.1
-port = 5672
-user = airtime_tests
-password = airtime_tests
-vhost = /airtime_tests
-
-[general]
-dev_env = testing
-api_key = H2NRICX6CM8F50CU123C
-web_server_user = www-data
-airtime_dir = /usr/share/airtime
-base_url = localhost
-base_port = 80
-base_dir = /
-cache_ahead_hours = 1
-station_id = teststation
-
-[monit]
-monit_user = guest
-monit_password = airtime
diff --git a/legacy/tests/conf/airtime.conf b/legacy/tests/config/airtime.conf
similarity index 100%
rename from legacy/tests/conf/airtime.conf
rename to legacy/tests/config/airtime.conf
diff --git a/legacy/tests/phpunit.xml b/legacy/tests/phpunit.xml
index 42cf815a3..0bf8e2dc8 100644
--- a/legacy/tests/phpunit.xml
+++ b/legacy/tests/phpunit.xml
@@ -16,8 +16,9 @@
 
     <php>
         <env name="ENVIRONMENT" value="testing" />
-        <env name="AIRTIME_UNIT_TEST" value="1" />
-        <env name="LIBRETIME_CONF_DIR" value="./conf" />
+        <env name="APPLICATION_ENV" value="testing" />
+        <env name="LIBRETIME_UNIT_TEST" value="1" />
+        <env name="LIBRETIME_CONFIG_DIR" value="./config" />
         <env name="LIBRETIME_LOG_DIR" value="./log" />
     </php>
 
diff --git a/legacy/tests/runtests.sh b/legacy/tests/runtests.sh
index ed9ca7624..7d9b195e4 100755
--- a/legacy/tests/runtests.sh
+++ b/legacy/tests/runtests.sh
@@ -26,7 +26,7 @@ export RABBITMQ_USER
 export RABBITMQ_PASSWORD
 export RABBITMQ_VHOST
 
-export AIRTIME_UNIT_TEST="1"
+export LIBRETIME_UNIT_TEST="1"
 
 #Change the working directory to this script's directory
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}")" && pwd)"