What do MP3s and Magic Spells Have in Common?

Ah, the MP3, everyone's favorite friendly musical file format. But there's something you might not know about the Mp3 - it has a lot in common with the magical spell!!!! Both spells and music were born from a freely available folk culture, but are now sold as commercial goods. There are thousands of artists and witches trying to figure out how to make a living in an age where their products can be infinitely copied. And with commercialization, the morality and legality of sharing these once open cultural products has become quite complicated.