I need help with getting video from a post.PLS

I have a
<script src='http://www.onthegosystems.com/mediaplayer/swfobject.js' type='text/javascript'></script>

<div id='mediaspace' style='text-align: center;'>This text will be replaced</div>

<script type='text/javascript'>// <![CDATA[
var so = new SWFObject('http://www.onthegosystems.com/mediaplayer/player.swf','mpl','580','400','9');
so.addParam('allowfullscreen','true');
so.addParam('allowscriptaccess','always');
so.addParam('wmode','opaque');
so.addVariable('file',' URL HERE ');
so.write('mediaspace');
// ]]></script>
video in the post. Is there a way to get it in the loop
Here is what I'm using so far:
<?php query_posts('category_name=productivity&showposts=10'); ?>
<?php while (have_posts()) : the_post(); ?>
<div id="post-<?php the_ID(); ?>" <?php post_class(); ?>>

<div class="entry-content">
<?php echo get_video() ?>
<div class="right">
<img src="<?php echo get_image() ?>" style="width:100px;height:100px"/>
<h2><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a><br />
By:<?php the_author_meta(‘description’); ?>
</h2>
<?php if(function_exists('the_ratings')) { the_ratings(); } ?>
<?php the_category(',') ?>
<?php the_excerpt(); ?>
<?php wp_link_pages( array( 'before' => '<div class="page-link">' . __( 'Pages:', 'twentyten' ), 'after' => '</div>' ) ); ?>
</div></div>
<?php comments_template( '', true ); ?>
</div>
<?php endwhile;?>


Here get_video is what i cant make work any sudjestions?

 

Since, i don not know Much of PHP. May i know the what is the function of this script. Explain in little details.

May be I can suggest you, Some other readymade plugin/script for That.

 

I suggest to use the SWFObject version 2.2. Also the tag with the 'mpl' id does not exist on you sample code.