One of the added benefits of using an AirPort Express in your outdoor speakers is, of course, that the AirPort can act as a repeater, giving you extended range on your wireless network.   Russound doesn't brad too much about the audio abilities of the speaker, though we'll let you draw your own conclusions on just what that means. Whatever the audio quality, we're hoping that the AirPort/AirPlay thing catches on with more devices, including outdoor systems. You can pick up the Russound AirGo Outdoor Sound System now for $399.