I have done some internet searching and still oblivious. I want to get 5.1 audio from my computer to my receiver. Coaxial or Optical can't carry a 5.1 signal so that is not happening. I tried to use my GFX card but ran into a huge issue. My card detects my receiver as a display and puts my desktop into dual screen mode. I can't plug my monitor into the receiver, otherwise it drops down to 1080P. I can't disable the display either, because the sound goes with it. I am currently running my desktop in dual screen mode... without the second screen. I was thinking of buying an HDMI sound card but the only one is the ASUS HDAV which was made in 2010 and not in production anymore. I can find it for $150 on ebay, but that doesn't seem like a good deal. This is my receiver. http://www.harmankardon.com/estore/hk/us/products/AVR-700/AVR 700_HK_US Is there a way to do HDMI through my video card and not deal with the display portion? Can the receiver take analog IN? I have no idea.