Here's how I export streams to mp3s:
1. Go to wfmu.org/playlists/Bs for full episodes of the show, or go to
http://www.wfmu.org/playlists/BD for the gems.
2. Right click the link to the .mp3 or the RealAudio file you want to listen to
3. Download the file to your drive
4. Open the file in VLC
5. Go to File>Streaming/Exporting Wizard in VLC
6. Export to mp3
7. Put the mp3 on your iPod
If anybody has a better solution I'd like to hear it, but this (above) has always worked for me.
I love VLC.