Due to no technical reason but a HDCP rule, the only exceptions for pass through to be in HD (audio or video) is Over The Air (OTA) or if from a protected channel (those apps such as Netflix).
If you connect to most other things such as your media player the HDCP rules kick in and I expect stereo only.
This seems to enrage those as they learn about HDCP and more. Hey, there is a way and that is to run the device on a HD HT system and pass the HD video from the HD HT to the HDTV but folk expected this work. That is, there no no technical reason for it not to.
re: SAMSUNG ES7000
I am very frustrated, I purchased the above because it has a DTS-supported media player, however the pass-through doesn't seem to be working correctly.
When I attach a usb-device and watch a dts-supported movie I get the pass-through after changing to 'DTS' in the SPDIF option, however when I then watch a tv show I have downloaded from ITunes it only plays in 2 channel yet the media info identifies it as AC3 6-channel. The only way I have found to get around this problem is to keep having to go in and manually change the setting each time!
Surely this SMART TV can auto-detect the correct audiostream????