To follow up with some of this week's discussion, here's a link to Audacity if you wish to download it and start experimenting with podcasting. Be sure to download the LAME encoder (yes, that's really what it's called) so you can save and mix the audio files. This should actually prevent your podcasts from being lame, too.
Let me know if you download it and start podcasting. I am all ears.
[Photo credit here.]