New DC sees Boot Disc & backups as audio CDs? 2 many coasters!

[CyberZer0]

I can see the files (3 text files w/ German text on the Utopia Boot Disc for example), & I'm sure I burned them PERFECTLY with a compatible burner (Almost the latest Plextor drive). Now I guess I need to find someone local with an older DC, but that's gonna be hard to do considering that in all this time, I've only met 1 person before that had one and he doesn't anymore. If it is a copy-protected DC, how will I go about reporting it? So far, EVERYONE in the DC channels & forums I've visited tells me that all DCs work with backups (Even though I heard a looooong time ago the the imported Sakura Wars Edition DC does not play backups)... So it's as if no one else has my problem.
BTW: 8 new coasters and still nothing works...