Copia el código, y sólo sustituye la dirección del mp3

<object type="application/x-shockwave-flash" data="http://soundaysmusic.googlepages.com/player.swf" id="audioplayer1" height="24" width="290">
<param name="movie" value="http://soundaysmusic.googlepages.com/player.swf">
<param name="FlashVars" value="playerID=1&amp;soundFile=http://www.DONDESUBISTELACANCION.com/music.mp3">
<param name="quality" value="high">
<param name="menu" value="false">
<param name="wmode" value="transparent">
</object>