Server Version#:Latest
Player Version#:Roku latest.
Vido marked AC3(5.1).avi will show up but zero comes to the Onkyo for sound. I run these through DivX and they will still not play sound. I allowed the Divx to reproduce the AC3 soundtrack.
I activated my old WDTV box and checked there to see which component was failing. WDTV played all the DivX movies with perfect sound. It would not play the format of AVI on that video.
The problem then is either with plex or with the Roku Express. Not sure which, but am going to check the Roku people.