Even if you wanted it, its sort of broken, I mean it works but the way its broken is very, very, annoying.
Basically it speaks whenever somebody speaks in chat, but it doesn't say the player name properly, it says something like player.user.name some random numbers then it speaks.
I unfortunately do not have it anymore as I got really annoyed with it being broken so I just deleted it from my add-ons folder.
But just remember that if somebody does have it, it might need to be fixed first.
If its fixed I'll be back here to snag myself a copy.