According to some people who are paid lots of money to think about these sorts of things, the legal, ethical and economic questions facing the music business aren’t just about preserving the livelihoods of people who work in that industry. No, the very future of democracy is at stake.... At the heart of the debate is how to license peer-to-peer sharing of music files, widely blamed for the huge drop in sales of recorded music this decade. Sandy Pearlman, a veteran producer and McGill University professor, and entertainment lawyer Dina LaPolt raised the specter of a “darknet,” in which information...