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How to record your own Podcast

Podcasting is a way of publishing sound files to the Internet, allowing users to subscribe to a feed and receive new audio files automatically. Podcasting is distinct from other types of audio content delivery because it uses the RSS 2.0 file format. This technique has enabled many producers to create self-published, syndicated radio shows.

Users subscribe to podcasts using "podcatching" software (also called "aggregator" software) which periodically checks for and downloads new content. It can then sync the content to the user's portable music player, hence the portmanteau of Apple's "iPod" and "broadcasting". Podcasting does not require an iPod; any digital audio player or computer with the appropriate software can play podcasts.
Paul has an nice guide for recording a podcast. I'll lay out the basics of creating a podcast in Audio Hijack Pro to get you going with any kind of podcast you want. First, I'll detail how to use Audio Hijack Pro to make a basic podcast with just one host. Then, I'll improve on this by adding in music and sound effects. Finally, I'll detail how to include voice chat (from programs such as Skype or iChat) in your podcast.

Podcasting differs from broadcasting and webcasting in the way that content is transmitted. Instead of a central audio stream, listeners download audio files remotely and automatically. Podcasts can also include metadata such as dates, titles, and descriptions. Podcasting differs from autocasting in terms of content; podcasts are generally voice broadcasts while autocasting is a speech-synthesized version of regular text blogs. Audioblogs can be easily made into podcasts if they add support for RSS to facilitate automatic retrieval.

To get audio feeds, users simply connect their MP3 player to their computer, go online, and subscribe to feeds they want the podcasting service to provide. Audio content is then pushed from the original source to an aggregator and then to the subscriber. To some, podcasting is one of the most exciting innovations to come along in quite awhile. They see it opening up an endlessly varied universe of audio content to anyone who wants it at any time. Also read Podcasting 101 - Illustrated Tips for Newbie Podcasters