Promises to Keep: Technology, Law, and the Future of EntertainmentDuring the past fifteen years, changes in technology have generated an extraordinary array of new ways in which music and movies can be produced and distributed. Both the creators and the consumers of entertainment products stand to benefit enormously from the new systems. Sadly, we have failed thus far to avail ourselves of these opportunities. Instead, much energy has been devoted to interpreting or changing legal rules in hopes of defending older