Here is the bug...When you double click a .MKV file that contains DTS-HD Master Audio 5.1, PowerDVD will open and video will start with no audio...In fact, all audio streams in the MKV will not work. If PowerDVD is already open and I select the .MKV with the DTS-HD Master Audio 5.1 stream through the PowerDVD interface, the movie plays fine with audio and video. This does not appear to be an issue with .MKV's with Dolby TrueHD or Dolby Digital 5.1. I have been testing for 3 hours and have reached this conclusion.
I am going to hold off purchasing until this is fixed since 80% of my movies are DTS-HD Master Audio 5.1. I saw at least 1 other post on this forum with the exact same problem, so it is not my setup.
The product is good except for this major problem for me...I look forward to a quick fix, thanks!