Here's a link that might help, maybe.
http://www.crutchfield.com/S-StnDfXs...p?id=15907&t=1
****SORRY****
Link doesn't work but when I went back to the site it wouldn't have helped anyway. The changers they listed to fit the PT didn't play MP3's, only regular CD's and CD-RW & CD-R. If I have time over the long weekend I'll check into it a little deeper.