AAC files and the arcane don't have much in common on the surface. After some digging, however, PBS' Idea Channel has found that magic is an uncannily good analogy for digital music rights and explaining the thorny ethical issues that come with them. Both music and spells stem from grassroots cultures that give away their content for free, but (at least until an anti-magic clampdown at eBay) have since become businesses. That nature poses a key ethical question: when we're used to a free experience and can copy songs or spells as mu
