I need to get a good 5.1 usb soundcard. I've heard some good things about this Philips: http://www.amazon.com/exec/obi...s=electronics&n=507846, but then Iv'e also heard that it's underpowered, so I'm not too sure. The Audigy2 NX (http://www.newegg.com/app/View...ion=29-102-167&depa=0) looks pretty good too, though it's almost 3 times the cost of the Philips. Any suggestions? Thanks!