Below is the source code I finally got to work. It needs to be saved in xml format, not htm.

====================copy below and modify ============================

<?xml version="1.0" encoding="windows-1252"?>
<rss version="2.0">
<channel>
<title>Wozcast</title>
<description>Occasional talk about technology, education and poetry by Warrick Wynne</description>
<link>http://web.aanet.com.au/warrickwynne/wozcasts/wozcasts.htm</link>
<docs>http://blogs.law.harvard.edu/tech/rss</docs>
<language>en-au</language>
<lastBuildDate>Fri, 1 Jul 2005 10:24:14 +1000</lastBuildDate>
<pubDate>Fri, 1 Jul 2005 10:21:45 +1000</pubDate>
<generator>FeedForAll v1.0</generator>

<item>
<title>Wozcast1</title>
<description>Learning to mix talk and music, some stuff from 3RR and a Frank song.</description>
<link>http://web.aanet.com.au/warrickwynne/wozcasts/wozcasts.htm</link>
<author>wynneww@mlc.vic.edu.au</author>
<enclosure url="http://web.aanet.com.au/warrickwynne/wozcasts/wozcast1.mp3" length="12000" type="audio/mp3"></enclosure>
<pubDate>Fri, 1 Jul 2005 10:20:43 +1000</pubDate>
</item>

</channel>
</rss>