From the Christmas Penguin

One of the hottest home electronics products is the Sonos Digital Music System: a Linux-based wireless audio setup that works as a kind of iPod for the home.

While other whole-home systems integrate with the TV and contain hard drives, the Sonos works strictly as a wireless distribution system. Your music and other audio files live on Linux, Mac or Windows PCs (or combinations of them -- file sharing is through Samba), and are displayed in color on Sonos' wireless handheld controller. Each room has its own ZonePlayer -- a small 50-watt amplifier. You can choose the speakers, or buy Sonos' own bookshelf units.

Writing in MadPenguin.org, Christian Einfeldt says, "It's the current state of the art for wirelessly controlling music in a large home or business where you need just the right music in the right room at the right time. And best of all, it's powered by GNU/Linux!" The Wall Street Journal calls it "... easily the best music-streaming product I have seen and tested. It's the Lexus of the category."