In all honesty, you don't need to wait for events to fire to use
MuteSoundFile(). You can call it from the main chunk. Also, SoundKitIDs can map to multiple FileIDs in which a random one is picked at call. They're not interchangeable.
Lua Code:
for _,fileid in ipairs({
640336, 640338, 640340,
640314, 640316, 640318, 640320,
640180, 640182, 640184,
640158, 640160, 640162, 640164
}) do MuteSoundFile(fileid); end