can a music library be managed efficiently only on your iphone? can songs be rated, playlists created, songs added to and removed from playlists etc.? I'd like to be able to do this anytime, on the go without having to plug in to my pc.
To the best of my knowledge as of right now I would have to answer you I know of none and it seems like a lot of work to do what you want to do. Is there a specific reason for eliminating the PC out on this?