Apple sells a product called the "Airport Express". It is a wireless networking node. You can plug your computer into it to join the network OR you can plug in a pair of speakers - this is called "Air tunes". iTunes allows you to stream music to multiple Airport Express nodes. My idea is to create a boom-box that has an Airport Express built into it. Right now you have to take your speakers or boom-box and your Airport Express to your listening spot. You plug the Airport Express...