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http://prwebpodcast.com/pod/361260/G...PS_Hosting.mp3

http://en.wikipedia.org/wiki/Podcast

Podcasting is the distribution of audio or video files, such as radio programs or music videos, over the Internet using either RSS or Atom syndication for listening on mobile devices and personal computers. A podcast is a web feed of audio or video files placed on the Internet for anyone to download or subscribe. Podcasters' websites also may offer direct download of their files, but the subscription feed of automatically delivered new content is what distinguishes a podcast from a simple download or real-time streaming (see below). Usually, the podcast features one type of "show" with new episodes either sporadically or at planned intervals such as daily, weekly, etc. Besides that there are podcast networks that feature multiple shows on the same feed.

Podcasting's essence is about creating content (audio or video) for an audience that wants to listen when they want, where they want, and how they want.