diff --git a/livesupport/src/modules/storageServer/var/audioClipFormat.php b/livesupport/src/modules/storageServer/var/audioClipFormat.php
index 1f878a069..a6358c32e 100644
--- a/livesupport/src/modules/storageServer/var/audioClipFormat.php
+++ b/livesupport/src/modules/storageServer/var/audioClipFormat.php
@@ -350,6 +350,7 @@ $audioClipFormat = array(
     ),
     'ls:mtime'=>array(
         'type'=>'Int',
+//        'regexp'=>'^\d{4}(-\d{2}(-\d{2}(T\d{2}:\d{2}(:\d{2}\.\d+)?(Z)|([\+\-]?\d{2}:\d{2}))?)?)?$',
     ),
 /*
     ''=>array(
diff --git a/livesupport/src/modules/storageServer/var/playlistFormat.php b/livesupport/src/modules/storageServer/var/playlistFormat.php
index 0ddc5f2e8..17d15dce6 100644
--- a/livesupport/src/modules/storageServer/var/playlistFormat.php
+++ b/livesupport/src/modules/storageServer/var/playlistFormat.php
@@ -66,6 +66,7 @@ $playlistFormat = array(
         'childs'=>array(
             'optional'=>array(
                 'dc:title', 'dcterms:extent', 'dc:creator', 'dc:description',
+                'dcterms:alternative', 'ls:filename', 'ls:mtime',
             ),
         ),
         'namespaces'=>array(
@@ -80,6 +81,10 @@ $playlistFormat = array(
         'type'=>'Text',
         'attrs'=>array('implied'=>array('xml:lang')),
     ),
+    'dcterms:alternative'=>array(
+        'type'=>'Text',
+        'attrs'=>array('implied'=>array('xml:lang')),
+    ),
     'dcterms:extent'=>array(
         'type'=>'Time',
         'regexp'=>'^\d{2}:\d{2}:\d{2}.\d{6}$',
@@ -110,6 +115,14 @@ $playlistFormat = array(
         'type'=>'Attribute',
         'regexp'=>'^((\d{2}:)?\d{2}:)?\d{1,2}(.\d{6})?$',
     ),
+    'ls:filename'=>array(
+        'type'=>'Text',
+        'attrs'=>array('implied'=>array('xml:lang')),
+    ),
+    'ls:mtime'=>array(
+        'type'=>'Int',
+//        'regexp'=>'^\d{4}(-\d{2}(-\d{2}(T\d{2}:\d{2}(:\d{2}\.\d+)?(Z)|([\+\-]?\d{2}:\d{2}))?)?)?$',
+    ),
 /*
     ''=>array(
         'childs'=>array(''),
diff --git a/livesupport/src/modules/storageServer/var/webstreamFormat.php b/livesupport/src/modules/storageServer/var/webstreamFormat.php
index 89fa5fe95..e7270e5ad 100644
--- a/livesupport/src/modules/storageServer/var/webstreamFormat.php
+++ b/livesupport/src/modules/storageServer/var/webstreamFormat.php
@@ -59,7 +59,7 @@ $webstreamFormat = array(
                 'dcterms:isPartOf', 'dc:date',
                 'dc:publisher',
                 // extra
-                'dcterms:alternative',
+                'dcterms:alternative', 'ls:filename', 'ls:mtime',
                 // added lately by sebastian
                 'ls:mood',
             ),
@@ -345,6 +345,14 @@ $webstreamFormat = array(
         'area'=>'Talk',
         'attrs'=>array('implied'=>array('xml:lang')),
     ),
+    'ls:filename'=>array(
+        'type'=>'Text',
+        'attrs'=>array('implied'=>array('xml:lang')),
+    ),
+    'ls:mtime'=>array(
+        'type'=>'Int',
+//        'regexp'=>'^\d{4}(-\d{2}(-\d{2}(T\d{2}:\d{2}(:\d{2}\.\d+)?(Z)|([\+\-]?\d{2}:\d{2}))?)?)?$',
+    ),
 /*
     ''=>array(
         'type'=>'',