Despite the rather large warning (written in japanese) telling me not to place the mini-disc into a CD player or a PC-CDROM, I did any way. And look what I found, Hidden Art and Music. If you place the mini-disc into your CD player (make sure you get the hole lined up to fit on the Cd players spindle. It will play the soundtrack for the game. Also if you place the disc in to your pc (again making sure it lines up with the spindle inside your cd drive), open the Extra folder and you will have two images.

If you place the Large disc in to your CD player you will hear an audio warning in Japanese. It says basically, This is a game disc not a music disc so quit trying to play it on your CD player.