a "progressive" view of making music free
A local San Francisco experimental musician Bob Ostertag makes his case for free music in the lefty web-zine AlterNet
It goes off the rails a bit against the "big evil corporations" towards the end but over all I found the article thought provoking.
fwiw - as it's printed on the packing - I released my CD Outre under Creative Commons V3 license which means you are free to do whaever you want with the material as long as it's purpose is non-commerical, you attribute the work to me, and any derivitive works you create from it are released under the same open license.