I see the problem you're facing and it's due to the way the xml file is loaded.
Because the Actionscript code loads the file once, Flash caches the xml information and there's no way to update the display without relaunching the game.
I'll try to implement a fix which requires the Actionscript to keep checking the xml file for changes every few seconds. This way, you could edit the xml file on the fly and automatically update the fast money screen with answers and points immediately.
Ultimately, I think that having a pair of laptops, one running the game, the other editing the xml file would probably be the most efficient way to go. It'd certainly be streamlined!
I'll provide an update this week.