Thanks for the reply, but that isn't really what I was looking for.. I want to be able to mute a utility track in a specific bar and then return it to normal in another. For the RealTracks, I can right click on a bar, select bar settings and change the output. There are no options for utility tracks there. I was wondering if there was another way to do it other than doing surgery on the audio wav files themselves. I'm guessing there's not.