Lets talk about what iTunes does. Back when it first launched, it was a companion to a piece of expensive hardware, the iPod, and a way to sell music that could be played on that piece of hardware. Both are Apple products, and the two work together as seamlessly as as Windows and Internet Explorer. One company, with a well-cultivated following, a lot of marketing and slick design, figured out how to make it easier for music fans to listen toand pay formusic than downloading MP3s off Napster and