[Addon request] Killing Blows sound

[Spicybridges 0]

Hi everyone. What i need is a addon, which play sound of my choosing when i (and only i, not party members) get a killing blow.

About 1 year ago i used addon which play quake killing sounds like "monster kill, first blood ect" and was able to modify for customs sounds. But now i can't find it anywhere! I found only latest version here  and some mention about "Pre whatever patch Enemy cast bars had a feature that would play quake killing blow sounds when you delivered the final blow in pvp" here 

Can someone please help me find this addon for 1.12.1 ? Or if someone can downgrade Killing Blows addon in link above for 1.12.1 version? Thanks.