I have the same problem and this forum solved the problem!
The HUB cannot play DDTRUEHD audio because of licensing issues. Western Digital would have to pay a fee for us to play movies with that sound codec. I had to re-rip my blu rays and pick the lower sound quality. The HUB cannot process TRUEHD audio. So TRUEHD, DOLBY DIGITAL TRUEHD etc will not play.
Please accept as solution and give kudos!!
