If you have a universal player and want to hook it up to an integrated amp just for two-channel listening, can you take advantage of the stereo SACD and two channel DVD-Audio tracks as well as redbook CD? Do you need to hook up the FL and FR channels from the multi out on the universal to another set of inputs other than CD input on the amp to get the SACD/DVD-A playback? Also, how does adding in a sub work?