Hey all,
I put together a package that replaces the game sounds with the sounds from 1.0/1.2. Unlike the one on the Downloads page, these sounds are 32-bit which allows for a much cleaner conversion from the original sound spec, and are not part of .CAT files which replace your originals.
Most importantly, however, they are loaded via ruleset so as to not overwrite/alter your original data files.
All you need to do is enable it in the Mods list.
NOTE: I've included the intro sounds as well, but they aren't implemented. They don't seem to be loaded from the ruleset until after the intro plays, which means it isn't altered. I don't want to overwrite your original data, so if you want to get the original intro sounds, get the SAMPLE3.CAT from the one on the downloads page.
If this gets implemented, I'll update the ruleset accordingly.