I just got my Oppo UDP-203 today and I'm having issues with HDMI audio and my 975.

I have the Oppo HDMI out directly connected to my TV and the audio out connected to the 975. When I first hooked this up, I was not able to get the audio to work. I called tech support and after messing around with the input settings, the audio started working just fine until I turned everything off.

This evening, when I turned everything back on, the audio was not working agin. After playing around, I discovered that you have to go into the 975 input settings, switch the HDMI mapping to an unused HDMI port, back out of the OSD, go back into the OSD, and switch the input mapping back to the HDMI port that the audio out from the Oppo is connected to. Once you do that, you get audio.

I'll be giving tech support another ring in the morning to update my findings and hopefully between Outlaw and Oppo there will be a firmware fix for this.