@StarThoughts: there are no differences other than delivery method (with the DTS track encoded from the PCM using SurCode DVD-DTS) The isolated score track was NOT on the bluray, per se, because most of the English audio commentary track 5 is an isolated score track in ac3 192kbps. a little bit of talking here and there but very little. I found a FLAC copy of nearly complete score on a Chinese forum (verified to be real CDDA lossless audio) and I have a FLAC copy of the OST as well. Then I looked up the artist and track name for the songs (like what's on neo's headphones at beginning of movie; for example) that are NOT on the OST and have found FLAC copies of those. Now it's a matter of syncing up all the separate tracks into one audio track, where I'm using the English audio commentary track 5 (which specifically focuses on the isolated score) as a reference. In doing it this way, I am able to reconstruct a lossless copy of the score which I will leave in PCM for the release. (Depending on how much of a pain it is, I might even up-convert it to a 5.1 [and end up with two isolated score tracks with a 5.1 and a 2.0], but this will depend entirely on the results, otherwise I'll just stick with the 2.0)
@The Aluminum Falcon: the program I use does not have the capability to encode lossless DTS-HD, only lossy DTS, however I'm sure that you are right about someone having the ability on this forum. That being said, I understand your suggestion and even though it might take up more room (it will fit on BD-50 either way) if a PCM and DTS tracks are both already on the release then no one has to go through the trouble of extracting anything out of the DTS-HD audio. In other words, all (technically) possible combinations of audio will already be available directly on the release. Then again, if there is someone on here that has the ability (software-wise) and would be willing to help with the encode (or with access to the proper software) then I might go that route instead. This is all a work in progress where doing the audio properly and as completely as possible (as far as availability of numerous languages) is a little bit of a process.