So, what's wrong with iTunes? (or what more would you want?)
phamilton: I use Amarok for my music needs.  The feature I enjoy most is the Now Playing playlist in a split window with my music library.  I can add whole playlists, whole albums, whole discographies, or just individual songs.Another feature I would like to see is some sort of network control...  I am frequently on the couch with my laptop, and my desktop is playing music.  Or my roommate wants to queue up a song.  What I finally did was use Amarok and VNC (with a java web client) to let anyone log in and update the playlist...)