What is a Pod Cast?

Answer 1

It is a method of publishing files to the Internet, allowing users to subscribe to a feed and receive new files automatically by subscription, usually at no cost. It first became popular in late 2004, used largely for audio files.
Some radio stations record their segments so you can download them to your iPod and listen to whenever you like.
Below is a link to the the first UK radio station to offer a daily podcast. Just search for your favorite radio station and check their podcasts.