I'm not asking about how the notification is presented to the user - I trust that, whatever you may be doing, the notification will be displayed to you. I'm asking whether the application itself knows that it's being interrupted and can do something intelligent in response to that interruption (automatically pausing, for instance). I assume the answer is "yes" - something like a generic "lost focus" window manager event - but I was actually surprised on the demo videos to see Bounce keep running even after the user had switched away from it to the dashboard. I would have expected it to realize that it no longer had focus and pause itself.