Well, unfortunately, I flaked out on that guide. But the general steps are:
1. Bit-perfect capture LD PCM audio stream from optical or coaxial spdif output at 16bit / 44.1 kHz.
2. Process the wav file using a program called DTS Parser.
3. Correct the DTS frame headers using A hex editor called xvi32 And a script I created for it:
https://mega.nz/#!Kcl2RbgA!Nk4Vl7KdMlMDRfyLcHlcFsFqnNoucCYw_NmSAuFmUgE
more detailed directions in this thread:
http://originaltrilogy.com/forum/topic.cfm/SUCCESS-Bit-Perfect-Audio-Capture/topic/15988/page/1/