The Sony ALT-SA32PC Wireless PC Audio lets you enjoy superb sound quality when you transmit from your PC to up to two additional rooms in your home with the included high-output premium speakers. An included USB S-AIR™ enabled Digital Wireless PC transmitter makes it easy to free the music stored on your computer and enjoy your favorite songs in another room of your home. The Sony ALT-SA32PC Wireless PC Audio Multi-room Music System can be paired with up to 8 additional S-AIR™ enabled premium and/or socket speakers (two premium speakers included, additional sold separately) that allow you to transmit high quality audio from your PC to multiple rooms in your home. S-AIR™ Digital Wireless technology makes it easy to enjoy your favorite music in multiple rooms in your house, without unsightly wires or the hassle of custom installations. The Sony ALT-SA32PC Wireless PC Audio includes unique music management software which taps into your existing playlists in iTunes and Windows Media Player, and even lets you create new channels of your favorite songs.