After being teased for some time, wireless multi-room music extraordinaire Sonos has finally put out their Sonos Controller app for Android. Which means if you have a Sonos, you can control your whole home setup with your Android phone (or tablet). Specific to Android, you can use voice search to play songs and your phone's volume rocker to pump up the volume too.
Sonos has also added support for Airplay! Well, sorta. It's a roundabout solution as you have to hook up an Airport Express to your Sonos system to get the Airplay goodness but it counts for something, I guess. [Android Market via Sonos]