Yeah, I've been listening to those, too. If you want to download all the old Radical Agenda shows, they are available at the Radical Agenda website for FREE. You just have to edit the download URL. Here's how...
Edit the url below to whatever episode you want to listen to. Here's the first episode. Notice how it ends with "RA001.mp3"
If you want to listen to episode two, just change the end of the url to RA002.mp3. Then for the third episode , change it to RA003mp3, etc, etc.