Streaming rhapsody on a HC800

[phillee25]

Ok so I have both of the outputs of an HC800 going into a control 4 audio switch. I have 6 button keypads in all of the rooms. What my client wants is to be able to hit a button on the keypad and select a certain channel on rhapsody in any room. So I'm having trouble figuring out how to right the code so that a room will either join a room if it is already playing that channel on rhapsody of to select that channel if no other room is playing it. As it is right now I have it set up to select the same media source in all of the rooms when you push the button 2 on the keypads. The problem I am having is it works fine when you select 2 rooms but after that to turn on another room it turns off one of the other 2 rooms.