Sonos is a Santa Barbara based wireless music company. They sell devices that can wireless play music around your house using an iPhone, iPod, FM tuner, or other music player. Sonos also has an iPhone app that allows you to control the music player controls. The company has raised $25 million in recent funding, led by Index Ventures. Mike Volpi has joined the board of directors as a a result of the funding. [VentureBeat]