Is there any way to just play MP3 files on the iPhone from a folder? I basically want to copy music into a folder on the phone (via SCP probably) and then load an app like Winamp that will read music from that folder and play it back. I don't care about gapless playback or album art or anything, and I don't want to use iTunes to sync anything. Just a basic disk access MP3 player. It'd be nice if it played m3u playlists, but that's not even necessary.