Sex, Drugs and Updating Your Blog (NY Times - free subscription required) is an in-depth look at the new world of music promotion via blogs, MySpace, and direct interaction with fans. It's essentially the direct-to-consumer model that some wineries are using applied to the music business.
Like the wine business, where thousands of new vintages are produced each year, indpendent musicians face the problem of standing out amidst a sea of songs. In some ways, it's easier for musicians: they can give away free samples, and shipping costs next-to-nothing.
Still, if you are a small winery attempting to get traction in the marketplace, there are lessons to be learned here. The most important: success depends on interacting with your fans. You can't just make wine (or music).