Not sure where you plan to put that.
You also have to remember, every time VA switches profiles, your system or VA is going to lag. Because Elite profiles are huge, and it will take a few secs for VA to load.
If you want one that runs without lag, you are going to have to add a random sound file option, for every command that calls for one. I can't think of any other way. Each command is unique, calling for unique sound files. There is no way I know of, to easily change how that works, without going to every command and changing it.
So, either run a timer, to change profiles every few mins, or take the time, and change all the commands. I could be wrong, but I don't think there are any other shortcuts for this one.