What i would like is if i have a playlist in one part of the tree and the same playlist in another part of the tree like REM is under rock but also in the girlfriends play list can be kept the same. So if get a new album and add it to the REM playlist under rock it automatically appears in the playlist in my girlfriends playlist.

Or another situation is i sort my tracks out under two methods A to Z so i have playlists for ABC, DEF etc and i also have them sorted out as per type so Beatles is under ABC and also "classic rock"

This would be nice otherwise i have to remeber this kind of thing so it is an upgrade to the empeg or an upgrade to my brain