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A podcast is a series of digital-media files which are distributed over the Internet for playback on portable media players and computers.  Podcasting allows almost anyone with a computer to become a radio DJ, talk show host, or musician.  Podcasting combines the freedom of blogging with digital audio technology. 

The term PodCast derived from the words “Broadcast: and “iPod”.  Even though the term is derived from the iPod, you don’t need an iPod to listen to a podcast. You can use virtually any portable media player or your computer. 

P­odcasting is a free service that allows Internet users to download audio files (typically MP3s) from a podcasting Web site to listen to on their computers or portable media player.  You can download the podcast daily or have it done automatically via an RSS (Really Simple Syndication) feed.  The technology is similar to that used by TiVo or DVR (digital video recorder) for us Oceanic subscribers, that lets you set which programs you’d like to record and then automatically records those programs for later viewing.There is also video Podcasts or videocasts.  This combines the audio component of podcasting with visual media.