I downloaded this and quickly had it working - the only setup I had to do was adding the app to my phones Notification Center. The app on the watch started working right away... I didnt even have to sync it to my Sonos system! When I tap a button on the watch, my Sonos speakers respond almost instantly, whether its set to one room or many. There are other apps that say they do all this, but this is the only one that actually delivers. Great job!