I was wondering if someone wouldn't mind making a plugin that could use the 'copy command' title formatting (or even a custom one within the plugin a user could specify) that would copy the playlist (on a timer... like every hour or something) and save it to a file (.txt probably). Then that file would be read by the plugin, and uploaded to a website the user specifies. Such as an FTP host. File name formatting would be good too.
Something like this:
(http://img.photobucket.com/albums/v326/keikonium/playlistbackupuploadfoobar.png)
Have you checked out Text Tools? available from foosion's site. It could be what you're looking for. (doesn't upload automatically though). Kitahei has a plugin called foo_ftpput which might be worth looking into too.