I wanted to know how I could hook up 2 to 3 different sets of speakers that would be in different rooms, that I could run from my computer but be able to decide what speakers I want to have on or off. My other question is when I hook up a set of stereo speakers from the computer to a stereo receiver why is there only one channel. I don't seem to get 2 channels when the speakers are hooked up on left & right channels. I only get sound when I hook up both speakers one channel of the receiver.