"Enclosures" are the bits of info in Atom and RSS feeds that make podcasting possible. With the new enclosure links UI, you can turn your blog into a podcast quite easily.
To turn on enclosure links, just go to Settings > Formatting and set the “Show Link fields” option to “Yes.” and save the settings
This will add the enclosure link fields to your post editor. From there, just paste in the URLs of your recorded media, and your blog will instantly become a podcast.
This is how your post editor look like, after adding the enclosure links