AirPort Express
The AirPort Express is a Wi-Fi base station product from Apple Inc., and is one of Apple's AirPort products. While more compact and in some ways simpler than another Apple Wi-Fi base station, the AirPort Extreme, the Express offers audio output capability the Extreme lacks. The AirPort Express was the first AirTunes (now called AirPlay) device to receive streamed audio from a computer running iTunes on the local network.