This is Sonic Adventure DX music. I got it from the PC version. Sonic Adventure DX (http://www.mediafire.com/?sharekey=fe277057a455d2b4931c7453395df0254636186b 72983209bf1b77d2eb488dac)

First "Files not working".
Second tell us,what songs are there?

You're right they aren't. :'(
Just download the game here (http://www.megaupload.com/?d=YH8QOS1I) and then extract the files. Then go to system, sounddata, wma and there are the songs.