Santa Barbara-based Sonos, which makes user friendly, wireless, multi-room music systems, has released an Android version of its music controller software. Sonos said that the app is now available in the Android Market, and is free for Sonos users. The new app allows users who have Sonos hardware to control what music is playing is different rooms, searching for songs, controlling volume, and more. Sonos had announced the new app in February. Sonos is headed by John MacFarlane. The new App works with Android smartphones running Android 2.1 or later. Sonos also has iPhone and iPad versions of its application, in addition to its touchscreen controllers and Mac and PC software.