From the Manufacturer
The Squeezebox Receiver lets you easily add extra rooms to your Squeezebox Duet system, bringing crystal-clear audio from your computer or Internet connection to any room. (Note: Squeezebox Receiver requires either a Squeezebox Duet or Squeezebox Controller.) Expert engineering and sophisticated audio rendering technology provide sound clarity to please even the most demanding audiophile. Advanced 802.11g wireless technology eliminates the need to string wires everywhere just to listen to the music from your computer. And setting up an additional room is simple as pushing a button--even on secure networks.
Listen Even When Your Computer Is Off
With this receiver and a Squeezebox Duet and/or a Squeezebox Controller (both sold separately), you can access millions of songs, thousands of Internet radio stations, and music service providers such as Pandora, Rhapsody and Slacker, without ever turning on your computer using SqueezeNetwork, Logitech's unique Internet service. Even your personal music collection can be stored online in an MP3tunes music locker and played through your Squeezebox.