diff --git a/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs b/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
index 481ba0ddac..e4128cf945 100644
--- a/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
+++ b/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
@@ -509,12 +509,25 @@ namespace MediaBrowser.MediaEncoding.Probing
             FetchStudios(audio, tags, "label");
 
             // These support mulitple values, but for now we only store the first.
-            audio.SetProviderId(MetadataProviders.MusicBrainzAlbumArtist, GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Album Artist Id")));
-            audio.SetProviderId(MetadataProviders.MusicBrainzArtist, GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Artist Id")));
-
-            audio.SetProviderId(MetadataProviders.MusicBrainzAlbum, GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Album Id")));
-            audio.SetProviderId(MetadataProviders.MusicBrainzReleaseGroup, GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Release Group Id")));
-            audio.SetProviderId(MetadataProviders.MusicBrainzTrack, GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Release Track Id")));
+            var mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Album Artist Id"));
+            if(mb == null) mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MUSICBRAINZ_ALBUMARTISTID"));
+            audio.SetProviderId(MetadataProviders.MusicBrainzAlbumArtist, mb);
+            
+            mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Artist Id"));
+            if(mb == null) mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MUSICBRAINZ_ARTISTID"));
+            audio.SetProviderId(MetadataProviders.MusicBrainzArtist, mb);
+
+            mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Album Id"));
+            if(mb == null) mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MUSICBRAINZ_ALBUMID"));
+            audio.SetProviderId(MetadataProviders.MusicBrainzAlbum, mb);
+            
+            mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Release Group Id"));
+            if(mb == null) mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MUSICBRAINZ_RELEASEGROUPID"));
+            audio.SetProviderId(MetadataProviders.MusicBrainzReleaseGroup, mb);
+
+            mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Release Track Id"));
+            if(mb == null) mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MUSICBRAINZ_RELEASETRACKID"));
+            audio.SetProviderId(MetadataProviders.MusicBrainzTrack, mb);
         }
 
         private string GetMultipleMusicBrainzId(string value)