Blue2k has updated his website recently with several news items about his Shell for the PSP, heres the info:

Artillery: Live Fire! now supports ANY size of mp3, it will continue to the next song and it will read from the default mp3 directory as well as the MbShell mp3 directory!

After a long day of work I've ported the lower audio layers of Artillery to C++, and with that I've added the functions named above. It now streams the mp3's from the memorystick, allowing unlimited filesize. It's not finished yet, it sometimes 'jumps' a bit, but you can only hear it using the earplugs.

It will now read MP3's from the default directory too: "ms0:/psp/music". Do make sure that directory exists before launching the mp3 player, even if you have no mp3's there. it will also jump to the next file when the current song has ended.
Blue

Download Here --> http://artillery-shell.com/