iTunes is just fine for listening to, watching, and storing podcasts. However, specialized applications like iPodderX give you more control over what to do with a content feed. Since the availability of 5th generation iPods, video podcasting has gained in popularity and specialized client application have started appearing, DTV and FireAnt being just two of them.
Participatory Culture Foundation's platform for internet television and video
DTV is a new, GPL open-source platform for Internet television and video (svn co https://svn.participatoryculture.org/svn/dtv/). The intuitive and very mac-like interface lets users subscribe to channels, watch videos, and build a video library. The DTV client is still in beta and currently only available for the Mac OS X 10.3 or higher, however, a Windows version is worked on. DTV uses Quicktime 7 and therefore anything that plays in Quicktime (like MPEG, MP4, MOV, H264) will play in DTV.
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