I subscribe to several podcasts via iTunes. I love This American Life and Radio West. I listen to these podcasts on my computer and on my iPod. I have also been able to share them with students. In October, we listened to Old Time Radio Thrillers. I have actually turned students on to some podcasts also.
I have tried to use Pioneer Library's downloadable audio files, but since I have an iPod instead of a regular mp3 player I am unable to use these files. :(