I found a post relating to this issue. A fresh install of GA and all kits may remedy the situation, though you may just want to try reinstalling the sounds first. It does seem to be a database issue. I have had the duplicate issue in the past, though can’t remember if I just ended up removing and reinstalling everything to fix it or not. I do not think I resolved it by simply removing and rebuilding data prefs etc. though. Hope you find the solution.