I got this awesome idea for the iPhone / iPod touch; the ability to create and edit any playlist on the go. I know on-the-go playlists do half the job, and that was just fine with the regular iPod, but this would be really easy to impliment with the touch screen. Maybe I'm just crazy, but I think it would be a really handy feature. It might even be possible to implement on the classic and the nano as well. So what does everyone think?