[pr0xZen]

So still no DTS-MA pass through on Windows 7 or 8.1?
This is the only thing holding me back.
can someone please confirm or suggest alternative box?

Just to be clear, I need to have HD audio pass through when play .mkv files from local drives. (in Windows)
I care less about audio from netflix etc

Conclusions so far is that the these two issues are due to the same problem. Fix one, fix both. Passthorugh is fine "in general" - just no DTS-HD in win8(.1)... for now. Works in OpenELEC though (so not a hardware problem), so expect it to be fixed eventually. For all I know, it could be fixed with the driver posted above - I just don't have the equipment to test it atm.