This 'mod' simply reduces the size of the in-game audio by a tremendous amount to make the game more compact on your harddrive. This improves a players ability to run the game via something like RAMdisk as well.
Did not test this mod beyond loading the main menu to make sure I can hear the music.
Just overwrite the games audio files with mine. There should not be any/much noticeable difference in the audio quality, however I've reduced the overall file size from hundreds of MB to just a few dozen.
https://mega.nz/#!cxJlDQyK!VHmF7wfIkUp3rp08Ch7iyWYzOSyxtY8rcXgZJMsVgX0