I've set up my HTPC and everything seems to be working well EXCEPT for audio. I can get stereo sound but no HD audio. To be clear: I currently see video and hear sounds, but only stereo. Doesn't matter if it's in VLC or using XBMC. If I run windows sound tests I hear each individual speaker in my 7.1 setup, but when I play a movie that is definitively full HD audio, I only hear stereo. A specific problem is that when playing MKV files in XBMC, everything stutters so slowly as to be unwatchable and there is no sound, even though the same files play perfectly in VLC. This is the initial rabbit-hole of questioning that lead me to the conclusion that this was a sound issue, since everywhere I look on the web MKV stutter problems in XBMC are related to audio issues. I believe I've traced the problem to Win7 only recognizing my projector as the audio output device, not my Yamaha receiver. Thus, Windows 7 is using the "wrong" output device and causing all my problems.
Simply put; my Yamaha RX-A1030 receiver appears to be invisible to Windows when connected via HDMI so Windows sends STEREO out to the projector, which it believes is a stereo ONLY device.
Here's my current setup. Everything is connected via HDMI:
HTPC >>> Yamaha A1030 >>> Epson Pro Cinema 810
I am using the official Intel drivers for my i3-4130. I do NOT have Realtek audio drivers installed. Under Windows Sound Devices (Control Panel | Sound) the only device listed is "Epson PJ".
So, I need help to get the "correct" device, Yamaha RX-A1030, to show in Windows 7 so I will have HD audio.