I have my ps3 running to the receiver via hdmi, but it shows up as stereo with only the mains and the sub. I know it's something I'm missing, but when I play a blu ray with master audio, it still comes out in stereo.

I had it all hooked up before, but I moved and now it's not showin me any love!

I'm guessing on the backlit main remote you have pushed the DVD/Stereo button, versus the one to the right of that to cycle through the various surround options. Or, on the PSII, you have something set wrong in the settings for Audio.

On the PS3 side, there are a couple of settings that have to be changed in the PS3 to get HDMI and multi-channel formats working. It's easy to just change one setting and then wonder why it still doesn't work.

Check out this guide. I didn't read it but I think it applies. There are some youtubes on it as well if you search.

PS3 Audio output for HDMI