1) Probably having Fatal Memory Errors. Check your Traces tab for that, and "not enough memory to allocate xxxMB using half of it"
If you see this, lower your buffer value or increase your Java heap settings.......viewtopic.php?f=6&t=3507&start=90#p38969
2) If you mean DTS, you need an amp/receiver capable of Optical input or HDMI input.
For optical cable and DTS, enable "keep DTS audio in stream......"
For HDMI cable and DTS, enable "DTS/FLAC to LPCM remux........"
To ensure Dolby Digital is not touched, enable "remux when audio is AC3....."