My Pioneer DTS receiver has a 5.1 switch, but when I press it, nothing can be heard from the speakers. I have every channel hooked up except the subwoofer channel, and they all work when I just use the DD setting. I called Pioneer and the tech told me the DVD player has to hook up to the receiver with 6 separate cables to get 5.1 from DVD. Is this right? Reason I ask is I don't think my receiver has the dedicated 5.1 inputs to begin with. Is this the ONLY way one gets 5.1 out of a DVD?