A podcast is an audio file that you download from the Internet. After you download it, you can listen to it on your computer or on an MP3/portable music player (for example, an iPod or iRiver). You can subscribe to a podcast so that it is delivered to you automatically each day, just like a newspaper.
The purpose of English as a Second Language Podcast is to teach English by using everyday phrases and expressions spoken at a slow rate of speech, followed by explanations of what these expressions mean and how to use them. Learners access the lessons for free on the website or via a piece of podcast/RSS feed software such as iTunes.