Information in this post is false. The RX-V561 does not process audio from an HDMI source. The RX-V661 does support this feature. I must have confused the RX-V563 (the newer RX-V500 series receiver) by accident. The RX-V563 does process 8 channel LPCM, which is perfect for someone like me who has a PS3.
Sorry for the information mix up.