I just plugged in my speakers with everything, but for some reason they only act as a normal set of speakers. The front two work but that's it. My subwoofer, rear speakers, and even the center don't emit any sound at all. I've changed all the settings on my comp to support the 5.1 surround sound but they still won't work. Any suggestions? Can you at least tell me a site that can solve this problem. Thnx in advance.