I just purchased a new Mac Pro D); however, I was a little disappointed with the sound card for a $3000 machine. I was previously using an older home-built PC with a Creative Sound Blaster Audigy 2 PCI sound card. Would I be able to swap this sound card into my Mac Pro? I'm not looking to improve the sound quality so much; rather I'd just like to use all of my 5.1 speakers. I figure I've paid for 5.1 speakers, so I may as well use all of them instead of the 2.1 I'm limited to with the ports built in on the Mac Pro. Is this at all possible?