NSImage *artwork;

                for (int i=0; i<[[iTunes.currentTrack artworks] count]; i++){
                    iTunesArtwork *iTunesArtwork = [[iTunes.currentTrack artworks] objectAtIndex:i];
                    artwork = [iTunesArtwork data];

                    if ([artwork isKindOfClass:[NSImage class]]){
                        break;
                    }
                }

                if (artwork != nil && [artwork isKindOfClass:[NSImage class]]){
                    [_musicImageView setImage:artwork];
                }