There are a series of digital media files (Either Audio or Video) that are released episodically and downloaded through web syndication. the most common audio file format used is MP3

What you will need to make a successful podcast: You will need a combination of hardware and software in order to record, edit, and publish your podcast. For audio you will need a microphone (available on most modern computers). For video you can use a web-cam, digital camera, or even a video-enabled phone.

Creating a podcast:

1. Record audio and convert it to a download-friendly format
2. Create a text file that describes your podcast.
3. Review everything to make sure its set up correctly.
4. Upload everything to the Web

Recording your first podcast:

1. Take a few notes on what you would like to talk about.
2. Click the Record button in your recording software and record for however long you need.
3. Make sure to tell who is speaking and be clearly heard.
4. Keep the Podcast interesting by noting its length.
5. Give nice sign-offs such as "See you next time"
6. Save your file and give it a name.

Notes on Pod-casting:

The term "pod-casting" was first mentioned by Ben Hammersley in The Guardian newspaper in a February 2004 article, along with other proposed names for the new medium. The name may be misleading, as despite the etymology, it has never been necessary to use an iPod, or any other form of portable media player, to use pod-casts; the content can be accessed using any computer that can play media files.

- A podcast is a digital audio file (usually MP3 or AAC) made available for download on the internet through an RSS 2.0 feed.
- Podcasts are recorded and deployed in such a way as to be accessed/enjoyed at the listener’s convenience.
- A podcatcher, or podcast client, is a computer program used to download various media via an RSS or XML feed.
- Video podcast (sometimes shortened to vodcast) is a term used for the online delivery of video on demand video clip content via Atom or RSS enclosures.

-History of Podcasting..

Obviously podcasting would not be possible without the internet. Since the mid-90s, the internet has evolved at the speed of light. Suddenly the world got smaller and people were exposed to the information super-highway.