Apple make the Airport was called by a device Express. It’s a radio router with a sound production and a USB socket, it to your printer and your stereo so you can connect. It will receive sound from i Tunes, or perhaps you can buy a credit card applicatoin called Airfoil ($25), which will deliver all of the sound from your own computer to your stereo over your cordless community. It really works with any cordless compatible Mac or Computer, and it also costs $99. This is a great way to go if everybody in your family keeps music on their own laptop. I’ve had several of those for decades, and they’re great.