Using WordPress For Podcasting
Podcasting is seamlessly supported as of WordPress 1.5. Just link to an audio file in one of your posts and WordPress will automatically add the necessary enclosure tag to your RSS2 feed to make it useable as a podcast. Not sure if you are using WordPress 1.5 or not? Simply login to the admin of your WordPress Blog and scroll to the bottom under the WordPress Logo. It will list your version there (mine is 1.5.2).
Important: Use a complete, absolute URL when linking to the audio file. Otherwise WordPress will not make an enclosure for it.
<a href="my-podcast.mp3">My podcast</a>
<a href="http://example.com/my-podcast.mp3">My podcast</a>
Important: The MP3 must exist or it will not create the enclosure tag.
This is a pretty cool feature I just found that I did not know WordPress offered. It automatically creates the enclosure tag linking to the MP3 file, pulling in the type (audio/mpeg) and determining the file size automatically as well! The only limitation I found was that it does MP3 only, no M4A files.