I've been creating playlists of libre.fm tracks on my hard drive for a while and it occurred to me recently that it would be nice if libre.fm had the ability to create user shareable playlists that tracks could be added to or removed from on the track page (with tracks being able to be added to multiple playlists), or removed/reordered on the playlist page, somewhat like YouTube's system.

Ideally the playlist would have a player like artist, album, or genre pages, but with the added ability to play the playlist in order instead of randomly.