A podcast or vidcast is a series of audio or video files released episodically and shared online similar to a serial radio or television program. Utilizing media player software (e.g., iTunes), users can subscribe to a podcast or vidcast, enabling automatic download of new episodes as they are posted by the creator.
Users can listen to a podcast or watch a vidcast on their computer or using a portable media player (e.g. iPod or other mobile device) Teachers and students can create and publish their own pod/vidcasts or freely subscribe to hundreds of options on a wide variety of topics (e.g. language learning, current events, historical speeches, etc.).