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What Is 'Podcasting'?
Podcasting, created by former MTV VJ Adam Curry, is a term
that was devised as a crisp way to describe the technology
used to push audio content from websites down to consumers
of that content, who typically listen to it on their iPod
(hence the "pod") or other audio player that supports
mp3 at their convenience.
The term podcasting is meant to rhyme with broadcasting and
is a derivative of the iPod platform. While not directly associated
with Apple's iPod device or iTunes music service, the company
did contribute both the desire and the technology for this
capability.
Podcasting uses an XML-based technology called RSS, or Really
Simple Syndication. Content publishers describe new content
in an XML RSS file which includes dates, titles, descriptions,
and links to MP3 files. This auto-generated file is called
an RSS feed. The key to making podcasting work with RSS is
enclosures, a feature supported by RSS 2.0.
What
makes podcasting special is that it allows individuals to
publish (podcast) radioshows, that interested listeners can
subscribe to. Before podcasting you could of course record
a radio show and put it on your website, but now people can
automatically receive new shows, without having to go to a
specific site and download it from there.
Podcasting is not unlike time-shifted video software and devices
like TiVo, which let you watch what you want when you want
by recording and storing video, except that podcasting is
used for audio and is currently free of charge. Note, however,
that this technology can be used to push any kind of file,
including software updates, pictures, and videos.
http://www.podcastalley.com
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