Исправлено удаление треков из плейлиста

YandexMusic.API/API/YPlaylistAPI.cs

@@ -129,6 +129,7 @@ public class YPlaylistAPI : YCommonAPI
     public Task<YResponse<YPlaylist>> DeleteTracksAsync(AuthStorage storage, YPlaylist playlist, IEnumerable<YTrack> tracks)
     {
         var distinctTracks = tracks.Distinct().ToList();
+
         var changes = distinctTracks
             .Select(t => playlist.Tracks?.FindIndex(ct => ct.Track?.GetKey() == t.GetKey()) ?? -1)
             .Where(i => i != -1)

YandexMusic.API/Models/Track/YTrackAlbumPair.cs

@@ -10,6 +10,16 @@ public class YTrackAlbumPair : IEquatable<YTrackAlbumPair>
         return string.Join(":", new[] { Id, AlbumId }.Where(s => !string.IsNullOrEmpty(s)));
     }
 
+    public static bool operator ==(YTrackAlbumPair left, YTrackAlbumPair right)
+    {
+        return Equals(left, right);
+    }
+
+    public static bool operator !=(YTrackAlbumPair left, YTrackAlbumPair right)
+    {
+        return !Equals(left, right);
+    }
+
     public bool Equals(YTrackAlbumPair other)
     {
         if (ReferenceEquals(null, other)) return false;