[Plugin: Audio Player] Standalone WordPress Audio Plugin Error in Internet Explorer

I am running the standalone WordPress audio player. When I load it up in Firefox, everything works as expected. However, when I load it in Internet Explorer, the audio player says “File not found”.

Here is my code:

Head

<script type="text/javascript">
<!--
var audio_color1 = "698D61";
var audio_color2 = "33472B";
var audio_color3 = "D9D9D9";
var audio_color4 = "BBBBBB";
AudioPlayer.setup("/WordPress-audio/player.swf", {width:210, tracker:audio_color1, volslider:audio_color1, loader:audio_color2, leftbg:audio_color3, rightbg:audio_color4, transparentpagebg:"yes"});
// -->
</script>

Body

<div id="flash_8ace5" class="flash">Backup Content</div>
<script type="text/javascript"><!--
	AudioPlayer.embed("flash_8ace5", {soundFile:"/path/to/my/audio.mp3", titles:"Title", artists:"Artists"});
//--></script>

I use the “noswfobject” version of the plugin, and I am loading the newest versions of both the plugin and of swfobject, with swfobject coming first.

Why is this not working in Internet Explorer? Any help would be appreciated.