Interesting... I'm now wondering if this could work with AirPlay. e.g switching playback from phone headphones to AppleTV when you arrive home, or switching to AirPort Express when you stroll into to the office.

Thanks so much!

They simply run command groups in Indigo, which are set to turn on/off an entire house code (my office).

 tell application "IndigoServer"
        execute group "All Office Lights Off"
 end tell

Any chance you could post the scripts you use with Indigo? Thanks!