LOS ANGELES -- I've been looking around for a while for a way to
wire up my home for sound, without all the wires. I hadn't been
satisfied with the options, partly because of the high prices.
Then I met Sonos' Play:1.  The little brother to the wireless
speaker company's Play:3 and Play:5 speakers packs a big sound
in a small package. And thanks to its littler price tag and a
new promotion that lasts through the end of the year, you can
now hook up a room in stereo sound for just under $400.  Sonos
is ranked third behind Bose and Jawbone in the U.S. wireless
speaker market, which represents about 8 percent of the $8.4
billion annual market for audio equipment including headphones,
according to research firm NPD Group. But Sonos offers a sound
system that other manufacturers such as Samsung and Bose are
only starting to imitate.   Sonos streams music over the
Internet, or from your computer, using your home's Wi-Fi
network. After plugging in its Bridge adapter to your router,
you can then plug in as many speak