I figured out how to get audio with MKV file

 This is the reason I picked the WD it iwll play any file even if it it will not actually play DTSHD, it still pulls the core and works.  Someday onother player will support DTSHD and my files will be ready.

As I have posted quite a few times, use MakeMKV to convert DTS-HDMA encoded .MKV files to 7.1 FLAC, the WD passes these as multi channel via HDMI to a suitable AV amp (my Denon 4308 displays 7.1 and the sound is really great)