public ActionResult AddToPlayList(int trackId, string returnUrl)
        {
            if (User.Identity.IsAuthenticated)
            {
                MusicRoomContext context = new MusicRoomContext();
                PlayListRepository playListRepository = new PlayListRepository();
                PlayList playList = new PlayList();
                foreach (var data in context.Tracks)
                {
                    if (data.TrackId == trackId)
                    {
                        playList.TrackPath = data.FileName;
                        playList.Author = data.Author;
                        playList.TrackName = data.TrackName;
                    }
                }
                playList.UserId = WebSecurity.CurrentUserId;

                playListRepository.InsertOrUpdate(playList);
                playListRepository.Save();

            }
            return Redirect(returnUrl);
        }
 public ActionResult DeleteTrack(int trackId, string returnUrl)
 {
     PlayListRepository playListRepository = new PlayListRepository();
     playListRepository.Delete(trackId);
     playListRepository.Save();
     return Redirect(returnUrl);
 }