I am simply trying to find a 'receiver' (please excuse my ignorance if I'm using the wrong terminology here) that takes one audio input, such as via an optical in, and does it's 'magic' so that I can have a 5.1 speaker setup connected. I don't need video or audio switching, as my TV has more that enough inputs for me. I simply want TV -> Digital Audio Out -> [???] -> 5.1 Speakers. I've been lurking around on these forums for a while, trying to educate myself on amps, receivers, etc... but I haven't been able to figure it out on my own. I would appreciate any advice. Thanks!