[DavidG]

Originally posted by Dan C.:
DavidG,
What does the "Use new sounds" actually do? Weapons components spedify a sound file, so by selecting "Use new sounds" is it going to a different directory?

Yup that is it exactly. If you look in the SE4 sounds directory you'll see another folder called 'New' with a similarly named set of wave files. Somewhere in the game there is a setting that lets you use the new sounds. No matter which you use the components.txt file will be the same.