DO NOT USE CURSE CLIENT
Curse client will not work with this addon because this addon is placed in a different folder (outside of the addons directory).
What does it do?
It Gets rid of all those annoying pesky GCD (Global cooldown) error sounds (woosh, clicks, bangs, and fizzle) so you can enjoy the nice sound of battle instead!
!!!!!!! Install Guide READ ME FIRST !!!!!!!
Extract the \Sound folder into your <DIR>\World of Warcraft\
or the \Language Folder
H:\World of Warcraft\Sound\
Is this addon legal?
Yes, it is, it does not modify any files outside of addon folder, Blizzard allows sound replacement, if they didn't, this addon wouldn't work like this.