[bluray]

XBMC --->Yamaha RX-V467 Receiver ----> TV

HTPC connected to receiver via HDMI & receiver connected to TV via HDMI

HTPC:
AsRock FM2A75M-ITX
AMD A6 5400K Black Edition CPU
Win 7 Ultimate
Frodo 12

AMD iGPU is little harder to configure audio output for bitstreaming. If you configure Frodo audio output as shown in the last screenshot below, it should bitstreaming HD audio codecs and decodes other audio codecs correct. For AMD iGPU, I am recommending options below to insure bitstreaming HD audio and playback video fluently-

1. Update the latest AMD driver from here- Graphics Drivers & Software
2. Disable everything other than "enforce smooth playback" in CCC video quality
3. Uninstall (generic pnp) monitor driver (leave the Display/GPU stuffs alone)
4. Disable "Use a fullscreen window rather than true fullscreen" in XBMC settings/system/video output
5. Enable "Allow hardware acceleration (DXVA2)" and select "Auto detect" as Render method in XBMC system/settings/video/playback
6. Below are the three screenshots of my audio configurations in Windows control panel