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podcast(iPOD broadCAST) An audio broadcast converted to MP3 for playback in a portable music player. Although podcasts can be played in a computer, the original concept targeted iPods. Podcasts may also be in the AAC format, which most music players support.
Podcasts can be downloaded from the Web or available via a syndication format. In the latter case, users install a media aggregator program (a "podcatcher") in their computers such as iTunes or Juice, which captures the audio feeds from the Internet for transfer to the player. See syndication format.
Conceived as a way to listen to audio broadcasts, podcasting evolved to include images and video (see photofeed and vidcast). Electronic slide shows are created as podcasts (see enhanced podcast), and "sound seeing" is the audio recording of a person's experiences when traveling. Some museums make audio tours available as podcasts, and art students and professors create their own unauthorized and often controversial narrations of famous works. See autocasting, punchcasting, learncasting and audiobook.