Solved: get file length (number of minutes and seconds

I have a page with videos (see attached code). I want to have something under the name of each of the videos that tells how long it is. So for example, next to the phrase "HOW TO Register at the WileyPlus website" I would like it to say 05:24 or something like that

HOW TO Register at the WileyPlus website. 05:24 mins.

I think that the length of the video is available but I don't know how to access it and display it on the webpage.

Can anyone suggest what I need to do?
Thank you.
P.S. Some suggested using this but I am not sure how to use it:
seconds = document.mediaobject.GetDuration() / document.mediaobject.GetTimeScale()

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
	<title>Statistics 2011</title>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
	<meta name="keywords" content="data mining, text mining, weka, neural network, classification, clustering, weka tutorial, weka video, knowledge explorer, sentiment mining">
	<meta name="description" content="A series of Weka screencasts that show you how to use Weka for text mining.">
	<link rel="stylesheet" type="text/css" href="css/reset-min.css" media="all">
	<link rel="stylesheet" type="text/css" href="css/style.css" media="all">
	<link rel="stylesheet" type="text/css" href="css/fancybox/jquery.fancybox-1.2.6.css" media="all">
	<!--[if IE]>
	<link rel="stylesheet" type="text/css" href="css/ie.css" media="all">
	<![endif]-->
	
	<script type="text/javascript" src="js/swfobject.js"></script>
	<script type="text/javascript" src="js/jquery-1.4.min.js"></script>
	<script type="text/javascript" src="js/jquery.fancybox-1.2.6.pack.js"></script>
	<script type="text/javascript" src="js/flowplayer-3.1.4.min.js"></script>
	<script type="text/javascript" src="js/weka.js"></script>
</head>
<body><div class="sentimentcss">
A series  of screencasts .</div>
<div style="float:right;">
  <script type="text/javascript"><!--
google_ad_client = "pub-8152624590362711";
/* 300x250, created 2/12/10 */
google_ad_slot = "9660156087";
google_ad_width = 300;
google_ad_height = 250;
//-->
</script>

<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>
</div>

<div class="wrapper">
  <h1><a href="index.php">Statistics for Fall 2011</a></h1>
		 Some basic Statistics videos are at <a href="http://www.sentimentmining.net/StatisticsVideos"> www.sentimentmining.net/StatisticsVideos</a>
	<br>
Some videos on the R programming language for Statistical Computing are at <a href="http://sentimentmining.net/StatisticsWithR/"> http://sentimentmining.net/StatisticsWithR/</a>	
		
  <ul id="videos">
			<li id="video-1">
				<font face="Verdana, Geneva, sans-serif" color="#6d6d6d" size="8"></font>
				<div class="details">
					<h2>HOW TO Register at the WileyPlus website</h2>
					<a href="#" class="watch">Watch</a>
					<a href="mp4/RegisterForWileyPlus.mp4" class="download">Download</a>
				</div>
			</li>
			
	<li id="video-2">
				<font face="Verdana, Geneva, sans-serif" color="#6d6d6d" size="8"></font>
				<div class="details">
					<h2>Chapter 2 Statistics Qualitative Frequency Distributions</h2>
					<a href="#" class="watch">Watch</a>
					<a href="mp4/Chapter 2 Statistics Qualitative Frequency Distributions.mp4" class="download">Download</a>
				</div>
			</li>
			<li id="video-3">
				<font face="Verdana, Geneva, sans-serif" color="#6d6d6d" size="8"></font>
				<div class="details">
					<h2>Chapter 2 Stem-and-Leaf  Dotplots Outliers</h2>
					<a href="#" class="watch">Watch</a>
					<a href="mp4/Chapter 2 Stem-and-Leaf  Dotplots Outliers.mp4" class="download">Download</a>
				</div>
			</li>
						<li id="video-3">
				<font face="Verdana, Geneva, sans-serif" color="#6d6d6d" size="8"></font>
				<div class="details">
					<h2>Chapter 2 Uses and Misuses of Graphs</h2>
					<a href="#" class="watch">Watch</a>
					<a href="mp4/Chapter 2 Uses and Misuses of Graphs.mp4" class="download">Download</a>
				</div>
			</li>
						</li>
						<li id="video-3">
				<font face="Verdana, Geneva, sans-serif" color="#6d6d6d" size="8"></font>
				<div class="details">
					<h2>Chapter 3 Box-and-Whisker Plot</h2>
					<a href="#" class="watch">Watch</a>
					<a href="mp4/Chapter 3 Box-and-Whisker Plot.mp4" class="download">Download</a>
				</div>
			</li>
									</li>
						<li id="video-3">
				<font face="Verdana, Geneva, sans-serif" color="#6d6d6d" size="8"></font>
				<div class="details">
					<h2>Chapter 3 Uses and Misuses Unemployment Rates</h2>
					<a href="#" class="watch">Watch</a>
					<a href="mp4/Chapter 3 Uses and Misuses Unemployment Rates.mp4" class="download">Download</a>
				</div>
			</li>
  </ul>
		
</div>			
		
	
</body>
</html>

Open in new window