There’s a 5 track sampler of Wake Up Sheepyhead over at Jamendo. These are on a Creative Commons license. I think this may be a good place to explain what this means.
There are a few different types of creative commons licenses. The one we are using is called an Attribution-NonCommercial-NoDerivs 3.0 Unported license or CC BY-NC-ND 3.0
Basically this means you can download and stream the tracks, but you cannot remix the track, transform it or use it for commercial gain unless you obtain a commercial license to do so. You can get a commercial license to use the tracks from Jamendo.
You are of course free to include the tracks in your podcasts and radio broadcasts.