I had a question concerning multiple audio tracks on a DVD that I am trying to backup. After reading through some of these forums, I know that a lot of the additional tracks are usually commentary or other misc tracks. Once I figured out how to decipher exactly what each track is (I am using DVD Shrink), I have come across a disc that has a track solely for the score of the movie. This is a 5.1 audio track. The standard 5.1 track for the movie obviously contains the score as well, in addition to the dialogue. However when I play my backup... something sounds a little funny. I did not include the additional 5.1 track containing only the score...so that I could keep the video at a higher quality. I wouldn't think that this would cause any issues, but maybe I am wrong. Do I need to include the track containing only the score to get the same sound quality, or am I just being paranoid about the disc sounding different?
Also, I played with this disc for a while to try and get a video quality I was happy with...due to a lot of extra features. I just wanted to get a feel for how low some of you are willing to go on the video to fit all the content you want on a single layer. I have been told not to go below 90%, but wanted to get some more feedback.
Sorry if these are somewhat simple questions, I'm just getting started with most of this stuff. Any help is appreciated.