Podcast

Podcast link
A downloadable audio file. From the right person, these are fantastic sources of information.

See also podcaster

A podcast is an episodic series of spoken word digital audio files that a user can download to a personal device for easy listening. Streaming applications and podcasting services provide a convenient and integrated way to manage a personal consumption queue across many podcast sources and playback devices.

There are many excellent sources of podcasts. Many of the independent media sources and analysts on Wikispooks have downloadable podcasts available, Most of them are not listed here, keep your eyes out for them!