Well, I looked onward in the Square Realms posts,
And I found a program that made the ripping of Xenosaga movies much more simpler, a program called Extractor 2.4 from Nova Software, it allows me to scan certain file archives, sort 'em out and extract them. That was how I was able to extract most of Xenosaga's movies. However, to get to the rest of them, I'll have to look into the rocket science that's called Ultra Edit, or hex editing to put it simply. Just thought I'd let people know if they got problems with Xenosaga movies and all. Now I gotta figure out how to extract those movies from the .hack games, and most importantly, Final Fantasy X-2. I'm going back to Square Realms to study it more.