Here's another place you should visit, this time from the British Council's Learn English site.
You'll find a collection of Podcasts, from Elementary through Themes, Stories and Poems, Professionals and Science. At the end of the list there's a link to thousands of podcasts worlwide. However I could not access it today; I'll try again soon.
Please do try as many of these podcasts as possible. Start with Elementary, then work your way through the other categories.
Remember, you can either listen to the Podcast on your computer, or save it to any device that plays MP3 files so that you can listen wherever you are - train, boat, car, possibly even plane.
Please tell us what you think of these podcasts by using the Tag Board or the Comments area.