I didn't use the AV Controller app for MusicCast. I just used the MusicCast app. I can't remember exactly now. :D But I'm guessing I added a ROOM. It was during the initial setup using the MusicCast app. I know I had to go back into MusicCast app and changed the Settings to rename the Room to "Back Porch" and also to add the picture of the back porch to MusicCast app. Ok I found it. I had to go to the settings at top right icon. Then to the main room then enable zone 2 and name it Garage. Now it functions independently. Sweet!!! :)