Jeez, I wish there were. It's amazing that we couldn't figure out that you DON'T HAVE to re-copy the sounds EVERY TIME YOU RESTART OR LOAD the same level you're on. I didn't even know that we re-copied the sounds until after we shipped. Again, something that the programmers grin sheepishly about when we mention it to them. That would have dropped our loading times by almost half, I bet.
Yeah, I think the only way to change the sounds is to alt-tab out of the game and manually change them, but that may be dangerous.