Please how to create playlist with J2ME? First read all music files from the local storage deives(MMC, Flash card) and list all files' content into playlist?

And how to use the playlist file done by music player application (e.g. window media 11 in Pocket PC), where does file exits inside mobile phone? How to write coding(with J2ME) to read that playlist? And can edit that playlist file from my own application?

Thanks so much