It is extremely easy to sort the playlist for example by 'artist' or 'album'. But what I really am missing is the possibility to sort the playlist by 'random'.
The shuffle function works fine in small to medium playlists, but in a large list often the same song passes by. This could be fixed by sorting the playlist by 'random' and play it without the shuffle feature. When hitting 'random' again, the playlist can be randomized any amount of times.