I have been getting some emails from some of my customers complaining about the videos not playing in Internet Explorer 9. If they go back to an older version it seems to work fine.
The videos all seem to work in Firefox, Safari, and Chrome.
Here is the code that I am using:
<script type="text/javascript" src="/Scripts/jwplayer-new/jwplayer.js"></script>
<script type="text/javascript" src="/Scripts/jwplayer-new/swfobject.js"></script>
<div id="player1"></div>
<script type="text/javascript">
jwplayer("player1").setup({
flashplayer: "/Scripts/jwplayer-new/player.swf",
file: "http://***/01-introduction.mp4",
width: "600",
height: "340",
image: "/***/lesson-background-html5.jpg"
});
</script>

May I make a suggestion?
Change the manner that you use for the JWPlayer, at least try and then decide for yourself.
I try whenever possible to reduce any number in making http calls and in this case disagree in using the swfobject.js
Please feel free to visit my web site and visit the multimedia section, www.mirana.net and feel free to look at the code. Virtually all of the pages in the multimedia section uses the JWPlayer 5.5 with two exceptions where I use a flash mp3 player and a flash video player.
Here is an example
<!-- JavaScript --><script src="js/jwplayer.js"></script>
<script src="js/mirana.js"></script>
<script>
//<![CDATA[
var options =
{
image:'contents/rat.jpg',
file: 'contents/ratatouille.flv',
width:'800',
height:'340',
bufferlength:'1',
controlbar:'none',
stretching:'fill',
fullscreen:'true',
autostart:'false',
players: [{ type: "flash", src: "player.swf" }]
};
function embedPlayer(id) {
$jw(id).setup(options).onPlay();
jwplayer("id").remove();
}
//]]>
</script>
<script>
embedPlayer('div1');
</script>
Place the above code just above the closing body element ( </body> ) then somewhere in your html have the following
<article id="showm"><article id="div1"></article>
</article><!-- end of show -->
Since, I am using html5 you can easily change the html5 elements ( article ), to that of ( div ).