One-Button Sonos Software Upgrade Allows Customers to Enjoy Music from Napster™, MTV Networks’ URGE, Yahoo! Music™ Unlimited, Zune Marketplace, and More—In Every Room

Las Vegas & Santa Barbara, Calif. — January 8, 2007 — Sonos, Inc., the leading developer of wireless multi-room music systems for the digital home, today released Sonos System Software 2.1, a software update to its award-winning digital music system. The one-button software upgrade allows Sonos customers to play Windows Media Digital Rights Management-protected songs— anywhere in the home—using Windows Media Player 11 on Windows XP or Windows Vista. As a direct result of close technical collaboration with the Microsoft Windows team, Sonos 2.1 enables music lovers worldwide to enjoy music from a broad range of music download services, including AOL® Music Now, MTV Networks’ URGE, Napster™, Wal-Mart®, Yahoo! Music™ Unlimited, and the Zune Marketplace.