Disabling/Removing Combat Sound

Hi,
My english is not my primary language.If there will has grammer issues,i'm sorry.

I tried opening and make empty sound (ex:draeneifemaleattacka.ogg) file in Wow/Sound/Character/DraeneiFemalePC and in Wow/Data/Sounds/Character/DraeneiFemalePc.Not worked.Am i mistaking the paths,sound name or is there another way or an addon about it?

After tons of searching,i found the solution.
First of all,true location was 'Wow/Data/Sound/Character/DraeneiFemalePC
Secondly,renaming ''.ogg'' with ''.wav'' worked like a magic!