I am the author of that program. It doesn't convert/transcode to PCM, it does SPDIF conversion. The PS3 "thinks" its playing a PCM, but really its bitstreaming a DTS to the amp. Source code http://www.3r1c.eu/mkv2vob/dtsinpcm.c I can assure you it does work. This particular method may not be very useful for anydvd though, it only works on ps3 and requires an external DTS amp, otherwise you just get static. The same conversion can be applied to any codec such as AC3, but I have not coded that yet.