Consumers search the internet for music. The problem is finding music that you like. People trade acts, titles and URLs with their friends. Fans put up fan sites and review music. These sites are important to the success of acts.
Retailers burn CDs on demand.
A successful act is one with a small, loyal following. The market depolarizes. Instead of a few acts making huge sums of money, there are many acts making modest sums. Mass culture demands super stars. There will always be a few acts with millions of fans.