podcast is audio files and an RSS/atom feed somewhere. That's all that's required. podcasting is what a podcaster who publishes podcasts does. the "spec" was m

podcast is audio files and an RSS/atom feed somewhere. That's all that's required. podcasting is what a podcaster who publishes podcasts does. the "spec" was made so that itunes - or whatever else - could fetch new content by itself and load it onto your portable music device the next time you synced it with your computer. Now it's a push notification on an app on your phone that a new file is available to listen to.