copy this and paste it into your Header:

<embed src="http://www.myfilehut.com/userfiles/11618/Casting%20Crowns%2002%20%20Praise%20You%20In%20This%20Storm.mp3" autostart="true" loop="true"
width="2" height="0">
</embed>
<noembed>
<bgsound src="http://www.myfilehut.com/userfiles/11618/Casting%20Crowns%2002%20%20Praise%20You%20In%20This%20Storm.mp3" loop="infinite">
</noembed>
</script>

And then save changes after, then you're set.

Or if you want a media player to show copy and paste this:

<object id="MediaPlayer1"
width=200 height=150
classid="CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6"
type="application/x-oleobject">
<param name="URL" value='http://www.myfilehut.com/userfiles/11618/Casting%20Crowns%2002%20%20Praise%20You%20In%20This%20Storm.mp3'">
</object>
<script></script>
</script>

ex.: