first - pop up activities are awesome - thanks.
they would be even better if I could create several popup activities that are hidden on the main screen.
Then add the ability to activate a popup activity from within another activity (preferably a nonhidden pop up)
This would be a huge benefit if, for example you have 8 zones of audio. You create a main popup that has 8 buttons, one for each zone. Each button opens a custom popup for that zone. I think this method would be cleaner than having to change rooms.