I recently built a new HTPC. It's an AMD based system with built-in sound and graphics running windows 7. I'm running it into an Onkyo HT-RC160 (7.1) receiver then to my samsung tv. I have the receiver set to "direct" which means PCM and multichannel. When I go into manage audio devices in windows, click to configure the receiver, set it to 7.1, and then cliick on each of the 8 speakers, it plays each one separately. So I know everything is communicating properly. However, I can not get the surround sound to work with anything else. Not with VLC, windows media player, not even with the surround sound tests on youtube through chrome, Does anyone have any ideas?