The short description sounds like a partial implementation of an idea I've had for several years now, and wish that Rio would take the forefront in implementing. But for proper operation, you would need to track more than just playlists. You'd have to track the number of times a given tune is played, for example, how long the tune lived in your collection before you deleted it, that sort of thing. I envision a day where all that stuff is done automatically, and the Rio software then suggests new music you might like.