Well, tried it using the AVR as the default AMD HD Audio playback device, and with a multi channel game running and minimized I still get only a stereo option in the Windows Sound panel. Worse yet, with the AVR as first device in the loop, I can't even get ANY audio actually playing back even in stereo. I used the HDMI 4 port as per Yamaha's FAQ for HDMI connection to a PC, and obviously have it on that input selection, otherwise I don't even get the desktop showing, but in that FAQ it also says to use an Optical audio cable with it. So the two weird things are that and the fact that my MB BIOS shows HDMI as an option only under the S/PDIF header in advanced onboard options. If I select HDMI though, the only HDMI options that show in the Windows Sound panel are the TV and Realtek. If I disable the Realtek HD Audio in the BIOS, the S/PDIF header below it and in turn it's HDMI option, completely disappears as a BIOS option. So if the impasse is not at the AVR, it may be that this MB and/or BIOS, only support the old S/PDIF pass through type HDMI that older GPUs used before the ones with their own audio driver came out. It could as well be the AVR though. That FAQ page for PC hookup via HDMI saying to use an Optical cable doesn't exactly give me confidence in it. I called Yamaha yet again today, and got fed up with the guy in their so called "tech" dept that answered, whom appeared to be one of their call center staff from India that handle overflow at peak times of day. Come next AVR I'm not sure I want to trust Yamaha. For now I might just get something like the Xonar DS for the DTS Connect. I probably should have bought it back when it was on rebate for $33.