Well that got a bit overboard! By 10 pages in fact.
So uh, lately I've been looking for some PS3 exclusives (or just console exclusives in general). Since I have a pretty good machine right now that can run pretty much anything I don't have any real reason to not get multiplatform games on PC, so I'm trying to justify my console purchase!
Right now I have my eyes on the Uncharted and inFAMOUS games. Those HD collections also look interesting, specially the Ratchet & Clank one since I never got to play those games on PS2.
It is an early PS2 game, therefore it's architecture might be too overly complex for PSound to find various sound clips. Changing the file's format won't help you at all. If you find websites like PS23D which can give you specific tools to properly extract various things, including sound files, there's a small but possible chance of that Smackdown game having a solution.