Podcasting
Podcasting is the distribution of audio files, such as radio programs, over the internet. A podcast is a web feed of audio or video files placed on the Internet for anyone to subscribe to, and also the content of that feed. Radio stations seem to be the ones who are jumping on the Podcasting bandwagon. Want more information?
Podcasting in the Classroom
Empowered Tech Audio Tools
Your Macintosh has GarageBand which is fully capable of producing podcasts.
Audacity: Free Audio Editor and Recorder
Check out Voicethread. It lets you share images, documents, and videos.
If you want examples in your area, Google your subject area and level with the term, "podcast". Example: High School English podcasts