First off I'm not sure if this is the right section for this post so if not feel free to move it. Now I'm running a turtle beach srm USB sound card and windows xp off a laptop. My problem is that when I'm playing music through RoadRunner there is no sound comming through the rear 6x9's but my subs and components up front work just fine. When I just run the demo for the sound card the rear speakers work fine. Not sure if this would be a Winamp problem or RR or what. Any help would be great. Thanks!

Kyle