maybe i am missing something but Window>Behaviours
then + play sound click on play file and navigate to sound file.
below is the code Ultradev generated when a plain html doc has this added to it.
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script language="JavaScript">
<!--
function MM_controlSound(x, _sndObj, sndFile) { //v3.0
var i, method = "", sndObj = eval(_sndObj);
if (sndObj != null) {
if (navigator.appName == 'Netscape') method = "play";
else {
if (window.MM_WMP == null) {
window.MM_WMP = false;
for(i in sndObj) if (i == "ActiveMovie"

{
window.MM_WMP = true; break;
} }
if (window.MM_WMP) method = "play";
else if (sndObj.FileName) method = "run";
} }
if (method) eval(_sndObj+"."+method+"()"

;
else window.location = sndFile;
}
//-->
</script>
</head>
<body bgcolor="#FFFFFF" onLoad="MM_controlSound('play','document.CS1000133026401','anysound.wav')">
<EMBED NAME='CS1000133026401' SRC='anysound.wav' LOOP=false
AUTOSTART=false MASTERSOUND HIDDEN=true WIDTH=0 HEIGHT=0>
</EMBED>
</body>
</html>
hope that helps I dont want to go to Chelsea!!!