CC-3946: Files with upper case "MP3" extension not being imported

- fixed

python_apps/media-monitor/airtimefilemonitor/mediamonitorcommon.py

@@ -35,7 +35,7 @@ class MediaMonitorCommon:
         # if file doesn't have any extension, info[-2] throws exception
         # Hence, checking length of info before we do anything
         if(len(info) >= 2):
-            if(info[-2] in self.supported_file_formats):
+            if(info[-2].lower() in self.supported_file_formats):
                 return True
             else:
                 return False
@@ -45,7 +45,7 @@ class MediaMonitorCommon:
     def is_audio_file(self, filename):
         info = filename.split(".")
 
-        if(info[-1] in self.supported_file_formats):
+        if(info[-1].lower() in self.supported_file_formats):
             return True
         else:
             return False