Ah yes, Digital Performer. I bought one on eBay last spring, that came with a key diskette that didn't work. After a month with tech support, they sent me a CD containing Digital Performer 2.7, which doesn't require a diskette. As long as you can prove that it's not pirated, they'll most likely give it to you.

Not sure if that helps. I don't know if 2.7 is PPC only or not.