The headshot crit mod is a mod that plays "Headshot" whenever you get a critical on a damage dealing spell or attack (does not work on healing crits).
To change the voice to whatever you want (mine is currently the peanut butter jelly song) fisrt download it,
http://wow-en.curse-gaming.com/downl.../headshot-1-0/
then, extract it into interface,addons in WoW folder.
next get your music or sound file you want it to be set at, convert or have it set to an Mp3 file, open up interface,addons in WoW folder open up file name critsound, then sounds, then copy the media file in there, name the media file HeadshotCLASSIC caps inculded now the other media file named headshotCLASSIC rename something else then restart WoW (the game) and make sure the mod is enabled and enjoy
"Nerd is the word for nubs to lazy to lvl there toon"
The great Nightsquishe