Cathy: go to "podcasting in Plain English" on utube. (Pod=Personal On Demand).
To get podcasts, you need a "Podcatcher."
Sue: lots of podcasts are available for teachers. Lots available on itunes, teacherspodcast.org, epnweb.org (the education podcast network). (eyringeducation.blogspot.com). itunesu are all educational podcasts.
podcasts are like RSS feeds.