刘禅的后代:怎么根据网页源文件找流媒体的绝对下载地址

这是那首歌的网址http://www.520music.com/play/72652.htm
可以试听 我想找到它的URL放到blog播放器上

这是源文件的一部分：
<script language="javascript">
document.write("<OBJECT id=Exobud style='WIDTH: 300px; HEIGHT: 64px' type=application\/x-oleobject border=0 classid=CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6>")
document.write("<PARAM NAME=\"URL\" VALUE='"+url+"/520yyq/665/76861.Wma'>")
document.write("<PARAM NAME='rate' VALUE='1'>")
document.write("<PARAM NAME='balance' VALUE='0'>")
document.write("<PARAM NAME='currentPosition' VALUE='0'>")
document.write("<PARAM NAME='defaultFrame' VALUE=''>")
document.write("<PARAM NAME='playCount' VALUE='100'>")
document.write("<PARAM NAME='autoStart' VALUE='-1'>")
document.write("<PARAM NAME='currentMarker' VALUE='0'>")
document.write("<PARAM NAME='invokeURLs' VALUE='-1'>")
document.write("<PARAM NAME='baseURL' VALUE=''>")
document.write("<PARAM NAME='volume' VALUE='80'>")
document.write("<PARAM NAME='mute' VALUE='0'>")
document.write("<PARAM NAME='uiMode' VALUE='full'>")
document.write("<PARAM NAME='stretchToFit' VALUE='-1'>")
document.write("<PARAM NAME='windowlessVideo' VALUE='0'>")
document.write("<PARAM NAME='enabled' VALUE='-1'>")
document.write("<PARAM NAME='enableContextMenu' VALUE='false'>")
document.write("<PARAM NAME='fullScreen' VALUE='0'>")
document.write("<PARAM NAME='SAMIStyle' VALUE=''>")
document.write("<PARAM NAME='SAMILang' VALUE=''>")
document.write("<PARAM NAME='SAMIFilename' VALUE=''>")
document.write("<PARAM NAME='captioningID' VALUE=''>")
document.write("<PARAM NAME='enableErrorDialogs' VALUE='0'>")
document.write("</OBJECT>")
</script></td>

我认为document.write("<PARAM NAME=\"URL\" VALUE='"+url+"/520yyq/665/76861.Wma'>") URL就在这行里面

有人可以帮我找出来吗？

讨论讨论！！