I'm sure someone will have devised a way to automate the process somewhat. If you look over at ffshrine, there are guys there who extract game music (some of which happen to be unreleased cues) in order to build more complete Soundtracks than the official so called 'complete' collections. It's those kind of guys who will have devised ways to streamline the process I imagine.

If not, I have patience. I've actually been thinking of buying republic commando on Steam for some time but not got round to it yet.