Help with Javascript + embed tag.

[deputy_doofy]

Ok, here's the deal. I made a new version of Scriptris, a javascript Tetris clone. I tried adding music by putting a drop-down menu in and letting the user select the tune.
It works in FireFox (Mac) and Safari.

It does NOT work in IE 7.x, nor FireFox (Win).
In IE7, if I change the song, it simply plays the new song over the previous one, and I can get the same tunes all playing simultaneously, which results in an ugly mess. As you can guess, the off option doesn't work at all.
In FF (Win), I get a message saying that it is missing a plug-in and never plays anything. It can't find any plug-ins automatically so I'm not sure what's needed. It already has QT 7.1.3 installed. What more do I need to get FF (Win) to play a quicktime sound?

You can test it here... http://mywebpages.comcast.net/skull2k5/scriptris2_0.html

The function that creates and removes the embed tag is:
function playTune(tune)
// tune variable is sent from a select tag.
{
// Create url based on tune selected.
var url="./music/tune"+tune.value+".mp3";
// Create reference pointer to embed tag.
var tetrisTune=document.getElementById("tetris_tune");
// Security check in case no embed tag exists.
if (tetrisTune==null && tune.value=="0") return;
// As long as tetrisTune reference exists...
if (tetrisTune!=null)
{
// Stop existing tune and remove embed node from document.
tetrisTune.Stop();
document.body.removeChild(tetrisTune);
}
// Create brand new embed node and set attributes for that tag.
tetrisTune=document.createElement("embed");
tetrisTune.setAttribute("loop","true");
tetrisTune.setAttribute("hidden","true");
tetrisTune.setAttribute("autostart","true");
tetrisTune.setAttribute("src",url);
tetrisTune.setAttribute("id","tetris_tune");
tetrisTune.setAttribute("enablejavascript","true");
document.body.appendChild(tetrisTune);
}// end playTune

 

[deputy_doofy]

Well, one problem fixed. By adding a type="video/quicktime" attribute/value, it now works in Windows FireFox.
IE is still goofy, with it overlapping tunes. Well, at least the game works.