I was wondering if there was a mod to remove those horrible sounds from trying to place a door or window in build mode? I really don't know if that is a mod that would be too complex or not. It makes me crazy when I'm building. Especially when I have the "Move objects" cheat on.
I made a mod for this. To use it, turn your speakers all the way down when you're in Build Mode, then turn them up again when you start to play your Sims. It works really nicely and is compatible with all the expansions.