I was shocked and strongly doubt the interconnect and speaker cable made by Bettercable have anything to do with the noise floor and interferance, but that's what I've been using on all equipments, they're kinda $$$ but very well construct and seems durable. Initially I thought my pc was inferior to any DVD/CD players and concern about interference and crosstalk that might of taken place, that's the main reason why I'd started this post, then went out and bought the Sony DVD/CD player in hope to improve the SQ, obviously that didn't happen so I'll stick with using my pc as the source, I have couple hard drives configured in RAID 0 so with about 600GB of disk space available, I think this is a far better jukebox than any CD Changer out there LOL.
A quick research on google came back with lots of reviews and comparison between the M-Audio and SoundBlaster Audigy Z2, and multiple visits to hifi and av forums concluded that, for music and dvd playback the M-Audio Revolution 5.1/7.1 blow all SouldBlaster card (including the newest Audigy Z2) out of the water, on the paper the Audigy Z2 has better spec, but in the real world the M-Audio has much better frequency response, the graph looks flat and all reviewers and HTPC users prefer the M-Audio, it's cheaper than the Audigy Z2 as well, I'm sure there's lots of better cards out there, but they're much more expensive and doesn't justified the performance difference.
For gaming, no doubt the Audigy Z2 is the way to go, but for me the M-Audio is the clear winner. I don't need to take out my Soundblaster either, so they can be switch back and forth.
Check out these reviews:
http://www.techspot.com/reviews/hardware/revolution71/rev-5.shtml
http://www.digit-life.com/articles2/m-audio-revolution71/ 
