I've just found out that Hwang and Li Long have some new pre-battle and victory quotes that are enabled by File9.pkg in the 3D model, although they do not function correctly when imported into the PS2 version. The characters will lose those quotes if you try.
The Characters part of the first...
By the way, I kind of believe that some of the data we're looking for, like flame color for Inferno/Will-O'-The-Wisp, weapon trail color, weapon size, lifebars format and possibly other stuff is stored in the game's executable. After all, that's where the character names are stored.
And here's one more find. Once extracted, the files found in MOVIE.AFS can be played and converted to a more standard video format with VirtualDub.
Also, the opening movie and a few other movies must be stretched to 16:9 manually.
These movies use the Sofdec format.
I've just discovered what some files in Human.OLK are. They are the characters's battle screams:
Japanese files are 22050 Hz, English files are 20000 Hz
319 Mitsurugi Japanese
320 Mitsurugi English
321 Seong Mi-na Japanese
322 Seong Mi-na English
323 Taki Japanese
324 Taki English
I believe that the files 319-368 and the files 1182-1259 in File7.olk are some kind of weapon properties data (size, sound effects, trail color, etc...). These are also found inside the SC3AE character model files as File9.pkg.
Actually, if I remember something I did a while a go correctly, it turned out that only File1 is different from the original version, so only that file is required for these movesets to work. That's all I know, though.