Originally Posted by cw4u
I've got LAV Audio now showing that it's inputting 5.1 AAC and outputing 5.1 PCM. However, my receiver is still showing that it's receiving 2.0 PCM.
Any other suggestions?
Sorry, I overlooked the fact that you are using optical to carry the audio to the receiver.
Optical cannot carry 5.1 pcm, only 2.0
Although I rarely recommend it, you'd need to use ffdshow to decode the audio and use it to re-encode to AC3 on the fly.
To do this, on the Audio TAB, use the button to [disable LAV audio]
Then, on the Config TAB, use the button to access [FFDshow Audio config]
Scroll the leftside and click on Output then check the box for [x] AC3 (SPDIF encode mode)
and also check the box for [x] Encode 5.1 streams only