CP, thank you very much... this kind of post, like many others, keeps me going on with my projects!
Back to the project: stamper sent me the central channel of a french 5.1, and it's pretty much the same of the mono soundtrack; I *overlaid* it to the isolated score, and the result seems better than the central channel alone; I'm still working on it, further sync is needed.
During this work, I listened better to the isolated score; John Carpenter is a great composer of minimal electronic music; there is a piano track that reminds me the atmosphere of horror video games like Silent Hill...
Forgot to mention: the BD and LD commentaries are different...