Which is? Here's the short short version. Because HDMI mandates HDCP any device that is capable of rendering sound (your HDTV) must only pass STEREO with a fine exception for OTA (over the air.)

How to fix that? Send the HDMI to the HT and then use HDMI from the HT to the HDTV.

I apologize for using so many TLA and FLAs. (two, three and four letter acronyms.)