A podcast is a special feed that includes a reference to an audio or video file instead of just text. People use a podcasting client (like iTunes or Juice) to collect and listen to the episodes.
Fun fact: The word "podcast" is a combination of iPod and broadcasting.
Have you ever considered creating your own podcast? It's like having your own radio or TV show. Your subscribers, instead of reading your posts at their computers, can listen through their headphones to your content at any time.
Adding a podcast to your WordPress blog is outrageously easy. While generating your blog's RSS feeds, WordPress automatically adds an
<enclosure> tag (available in RSS 2.0) if a music file is linked within that post, and this tag is read by podcast ...