Default UI Sounds

Turns out the UUID of the "rez a new prim" sound is f4a0660f-5446-dea2-80b7-6482a082803c. It is hardcoded inside of llcontroldef.cpp so you can't configure it without either altering the source, or (as my buddy Malevolent Garmes did) put on your Wonder Woman Underoos and take a hex editor to the executable. So, while you can't simply alter one of those nice config files included with your install to change the default sounds, they can be changed.