Edited Podcast.php

Added
<itunes:image
href="http://sermons.mvchurchofchrist.org/iTunesgraphic.png" />

between
<generator>Wordpress Sermon Browser plugin <?php echo
SB_CURRENT_VERSION ?> (http://www.sermonbrowser.com/)</generator>

and

<docs>http://blogs.law.harvard.edu/tech/rss</docs>