I have tested and used this mte to create iTunes friendly xml. This will allow you to create the xml file that will appear in your podcast on Itunes.
Just change the info that is YOUR... to your info and once saved from the export option on the file menu, Select All files in MP3TAG and run the export.

CODE
$filename(YOUR FILE NAME.xml)
<?xml version="1.0" encoding="ISO-8859-1"?>
<!-- <?xml-stylesheet type="text/xsl" href="xsl_squonk.xsl"?> -->
<!-- <?xml-stylesheet type="text/xsl" href="xsl_simple.xsl"?> -->
<rss xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd" version="2.0">
<channel>
    <generator>YOUR GENERATOR</generator>
    <pubDate>%_file_mod_datetime%</pubDate>
    <title>YOUR FEED TITLE</title>
    <description>YOUR FEED DESCRIPTION</description>
    <link>YOUR FEED'S INTERNET HOME PAGE</link>
    <copyright>2006 YOUR RIGHT. All rights reserved.</copyright>
    <managingEditor>MANAGER EMAIL</managingEditor>
    <ttl>1</ttl>
    <language>en-us</language>
    <webMaster>WEBMASTER EMAIL</webMaster>
    <itunes:subtitle>FEED SUBTITLE</itunes:subtitle>
    <itunes:summary>YOUR SUMMARY</itunes:summary>
    <itunes:author>YOUR AUTHOR</itunes:author>
    <itunes:image href="YOUR IMAGE URL"/>
    <itunes:explicit>no</itunes:explicit>
    <itunes:owner>
        <itunes:name>YOUR OWNER NAME</itunes:name>
        <itunes:email>YOUR OWNER EMAIL</itunes:email>
    </itunes:owner>
    <itunes:category text="">
    </itunes:category>
    <itunes:category text="YOUR CATEGORY">
        <itunes:category text="YOUR CATEGORY"/>
    </itunes:category>
    <image>
    <url>YOUR IMAGE URL</url>
    <link>YOUR LINK FROM YOUR IMAGE</link>
    <description>YOUR DESCRIPTION</description>
    <title>YOUR TITLE OF YOUR PODCAST</title>
    </image>

$loop(%title%)    
   <item>
    <title><!'['CDATA'['%title%']'']'></title>
    <description>YOUR DESCRIPTION</description>
    <pubDate>%_file_mod_date%</pubDate>
    <link>HTTP://YOUR PATH ON INTERNET TO FILE/%_filename_ext%</link>
    <author>YOUR AUTHOR</author>
    <comments>YOUR COMMENTS</comments>
    <enclosure url="YOUR ENCLOSURE URL (KEEP QUOTES)" length="%_file_size_bytes%" type="audio/mpeg"/>
    <guid isPermaLink="false">YOUR GUID, I USE THE FILE PATH.  LEAVING BLANK WILL NOT WORK AS IT GETS ENCODED AND WILL NOT FUNCTION IN ITUNES</guid>
    <itunes:subtitle>%title%</itunes:subtitle>
    <itunes:summary>YOUR SUMMARY</itunes:summary>
    <itunes:author>YOUR AUTHOR</itunes:author>
    <itunes:keywords>YOUR KEYWORDS</itunes:keywords>
    <itunes:duration>%_length%</itunes:duration>
    <itunes:explicit>no</itunes:explicit>
    </item>
$loopend()
</channel></rss>