A podcast is audio (such as a radio show) that you can download to your computer and listen to whenever and where ever you want!
iPod + Broadcast = Podcast.
When the podcast is downloaded to your computer, you can listen to it there (using iTunes, Windows Media Player, or your choice of media player), or you can transfer it to your MP3 player (such as an iPod) and listen to it on the go! It’s like subscribing to a magazine or newspaper, but with podcasting, we deliver audio to your computer over the internet so you can listen whenever it suits you.