A podcast is a digital media file, The podcast word was inventid with the join of two words Pod (portable) and broadcast. Podcasting's initial appeal was to allow individuals to distribute their own radio shows, the advantage of the podcast is the possibility of listening in all places.
Recording an Audio Podcast mp3
Credits: http://www.podcast411.com/page2.html
http://es.wikipedia.org/wiki/Podcasting
http://www.podcastellano.com/