Build a Pandora clone with Silverlight 4

For the uninitiated, Pandora is a popular Flash-based internet radio service: users create their own radio stations by seeding an artist or song, and by giving a thumb-up or thumb-down to played songs. The software responds by playing more of what the user likes based off these inputs. In this article, I'm going to show you how to build a Pandora-like music service using Silverlight 4, WCF, and