I got the player to show up by changing

<script type="text/javascript" src="swfobject.js"></script>

to

<script type="text/javascript" src="http://about-him.com/play/swfobject.js"></script>

However, your playlist is still empty.

For what its worth, the entire contents of the code I'm using is below.

<!-- Begin Copy/Paste -->
<script type="text/javascript" src="http://about-him.com/play/swfobject.js"></script>
<div id="flashPlayer">
This text will be replaced by the flash music player.
</div>

<script type="text/javascript">
var so = new SWFObject("http://about-him.com/play/playermultiplelist.swf", "mymovie", "295", "200", "7", "#FFFFFF");
so.addVariable("autoPlay","no")
so.addVariable("http://about-him.com/play/","playlist.xml")
so.write("flashPlayer");
</script>
<!-- End Copy/Paste -->

JBlatz