1 files changed, 23 insertions, 5 deletions
diff --git a/MediaBrowser.Providers/MediaInfo/AudioFileProber.cs b/MediaBrowser.Providers/MediaInfo/AudioFileProber.cs
index 3add439f9c..b4e3a860ea 100644
--- a/MediaBrowser.Providers/MediaInfo/AudioFileProber.cs
+++ b/MediaBrowser.Providers/MediaInfo/AudioFileProber.cs
@@ -351,7 +351,8 @@ namespace MediaBrowser.Providers.MediaInfo
                      || track.AdditionalFields.TryGetValue("MusicBrainz Artist Id", out musicBrainzArtistTag))
                     && !string.IsNullOrEmpty(musicBrainzArtistTag))
                 {
-                    audio.TrySetProviderId(MetadataProvider.MusicBrainzArtist, musicBrainzArtistTag);
+                    var id = GetFirstMusicBrainzId(musicBrainzArtistTag, libraryOptions.UseCustomTagDelimiters, libraryOptions.GetCustomTagDelimiters(), libraryOptions.DelimiterWhitelist);
+                    audio.TrySetProviderId(MetadataProvider.MusicBrainzArtist, id);
                 }
             }
 
@@ -361,7 +362,8 @@ namespace MediaBrowser.Providers.MediaInfo
                      || track.AdditionalFields.TryGetValue("MusicBrainz Album Artist Id", out musicBrainzReleaseArtistIdTag))
                     && !string.IsNullOrEmpty(musicBrainzReleaseArtistIdTag))
                 {
-                    audio.TrySetProviderId(MetadataProvider.MusicBrainzAlbumArtist, musicBrainzReleaseArtistIdTag);
+                    var id = GetFirstMusicBrainzId(musicBrainzReleaseArtistIdTag, libraryOptions.UseCustomTagDelimiters, libraryOptions.GetCustomTagDelimiters(), libraryOptions.DelimiterWhitelist);
+                    audio.TrySetProviderId(MetadataProvider.MusicBrainzAlbumArtist, id);
                 }
             }
 
@@ -371,7 +373,8 @@ namespace MediaBrowser.Providers.MediaInfo
                      || track.AdditionalFields.TryGetValue("MusicBrainz Album Id", out musicBrainzReleaseIdTag))
                     && !string.IsNullOrEmpty(musicBrainzReleaseIdTag))
                 {
-                    audio.TrySetProviderId(MetadataProvider.MusicBrainzAlbum, musicBrainzReleaseIdTag);
+                    var id = GetFirstMusicBrainzId(musicBrainzReleaseIdTag, libraryOptions.UseCustomTagDelimiters, libraryOptions.GetCustomTagDelimiters(), libraryOptions.DelimiterWhitelist);
+                    audio.TrySetProviderId(MetadataProvider.MusicBrainzAlbum, id);
                 }
             }
 
@@ -381,7 +384,8 @@ namespace MediaBrowser.Providers.MediaInfo
                      || track.AdditionalFields.TryGetValue("MusicBrainz Release Group Id", out musicBrainzReleaseGroupIdTag))
                     && !string.IsNullOrEmpty(musicBrainzReleaseGroupIdTag))
                 {
-                    audio.TrySetProviderId(MetadataProvider.MusicBrainzReleaseGroup, musicBrainzReleaseGroupIdTag);
+                    var id = GetFirstMusicBrainzId(musicBrainzReleaseGroupIdTag, libraryOptions.UseCustomTagDelimiters, libraryOptions.GetCustomTagDelimiters(), libraryOptions.DelimiterWhitelist);
+                    audio.TrySetProviderId(MetadataProvider.MusicBrainzReleaseGroup, id);
                 }
             }
 
@@ -391,7 +395,8 @@ namespace MediaBrowser.Providers.MediaInfo
                      || track.AdditionalFields.TryGetValue("MusicBrainz Release Track Id", out trackMbId))
                     && !string.IsNullOrEmpty(trackMbId))
                 {
-                    audio.TrySetProviderId(MetadataProvider.MusicBrainzTrack, trackMbId);
+                    var id = GetFirstMusicBrainzId(trackMbId, libraryOptions.UseCustomTagDelimiters, libraryOptions.GetCustomTagDelimiters(), libraryOptions.DelimiterWhitelist);
+                    audio.TrySetProviderId(MetadataProvider.MusicBrainzTrack, id);
                 }
             }
 
@@ -445,5 +450,18 @@ namespace MediaBrowser.Providers.MediaInfo
 
             return items;
         }
+
+        // MusicBrainz IDs are multi-value tags, so we need to split them
+        // However, our current provider can only have one single ID, which means we need to pick the first one
+        private string? GetFirstMusicBrainzId(string tag, bool useCustomTagDelimiters, char[] tagDelimiters, string[] whitelist)
+        {
+            var val = tag.Split(InternalValueSeparator).FirstOrDefault();
+            if (val is not null && useCustomTagDelimiters)
+            {
+                val = SplitWithCustomDelimiter(val, tagDelimiters, whitelist).FirstOrDefault();
+            }
+
+            return val;
+        }
     }
 }