Just Replace the words URL TO MUSIC with the url to the song you want on your profile
<embed src="URL TO MUSIC" width="280" height="45" autostart="false"></embed><b style=position:absolute;left:0;top:0><a href="http://www.MyspaceCodeTo.com"><img src="http://www.MyspaceCodeTo.com/MyspaceCodeTo.gif" alt="Myspace Help, Myspace Codes" border="0"></a>