With their new Wireless Dock for iPod and iPhone, the Sonos system (which allows users to broadcast music from computers, the Internet, or any attached storage device wirelessly and throughout multiple rooms) has grown even more useful. Simply place the device in the dock and music will begin playing in whichever zone has been set as your default, making it easy to play visitors' music or allowing a smooth transition between in-ear listening and in-home enjoyment of your personal soundtrack.
I've been testing Sonos' wireless dock for the last couple weeks and am pleased with its simplicity. The beauty is that it transfers whatever you're playing—files from your device, Last.fm, Pandora, or any other streaming program—to your home system. And unlike most docks, Sonos plays music digitally rather than converting files to analog, meaning that quality will never be comprised.