Sonos is a Santa Barbara-based company that was one of the first to make a wireless music server system that included iPod connectivity. Current models do this, plus Internet radio and more.
Sonos now also sells speakers, wireless controllers, and even has an iPad/iPhone/touch app that lets you control your Sonos system, plus sort through all your music. The variety of Sonos products all talk to each other, letting you create one complete music network in your home with just a few products and minimal installation.
Notable Sonos products include:
Sonos ZonePlayer S5
Sonos ZonePlayer 120
Sonos Controller 200