Yeah, I frequently have a dozen or more apps open, and I don't always remember if I've already opened an app, especially early in the day, so having a single way to bring it foremost, if it's running, or run it, if it's not, would be VERY nice... 

Another reason: some apps misbehave if you run multiple instances (or there's never a valid reason for running more than one instance), so I'd even like the ability to have FARR check for an instance of the app already running and give me the option of switching to it, rather than opening another...

Ok- I assumed that, since the help file said it's a default alias, I didn't need to do anything else.  At any rate, I installed the alias pack, and tried the mute and unmute aliases, but they don't seem to do anything.