For some reason I am unable to get my MKV files to pass through the DTS signal unmolested. I have some WAV files that are DTS encoded and those are working well.
The MKV's when I play them are coming through to the PS3 as Dolby Digital instead of their native DTS streams. So I think it's doing a forced AC3 re-encode, but I can't figure out how to stop that. I have the check mark for "Keep DTS Track", but that seems to be ignored or something. I'm using PMS 1.7.0 on Ubuntu Linux.