Scott Kirsner has an open letter to media companies about turning copyright violations into income streams.
Right now copyright is the right to control making copies. In a digital world, this right is impossible to enforce. Copyright has to morph into the right to make money from anybody who copies your work. Artists and corporations have to give up control (which they've already lost, though they won't admit it) in exchange for income (which they're currently losing because they're not willing to adapt).
Kirsner's solutions are not necessarily the ones that will be implemented, but something's got to give.