Like for your own units? You have to replace a current units sound I think... I might be wrong. It would make sense to require it like icons so that they require a set path, but you can make your own name. But I just dont know
Not sure how to do it the right way; which is possible to do, but I have a simple solution. I'd make a trigger that activated on when the player clicked him and if he clicked something else it'd reset. Just do this by setting an integer to itself plus one when you click the unit, triggering a different sound each time by checking it. Then, if a player clicks another unit, just reset it. Good luck.
I don't think I'm dealing with quite the same pressures though, at the very least its a significantly smaller system. For the time being I'm just going to put together a quick scrubby box though and hope it works good enough to not make my house toxic
I do know this - xenforo dropped the ball by not keeping the vbulletin reputation comments as a feature. The loss of the Reputation comments data when we switched to Xenforo really was the death knell for the site when it came to all the users that left. I know I missed it so much and I got way less interested in the site when that feature was gone and I run the site.