No Revolution

Dynamically-Personalized Radio
http://www.pandora.com/
This appears to be a commercial start-up offshoot of the Music Genome Project. Here's an NPR interview with the founder and CEO. The Wikipedia entry says, "When users enter their preferences, the Music Genome Project analyzes the style and particular elements of the songs or bands entered, and uses a search engine to find like artists and songs, both famous and fairly obscure. These more obscure artists submit their music to the Music Genome Project to become more well-known."