Edit forum template and add the following

HTML Code:
<center>
<object height="160" width="650" type="application/x-shockwave-flash" id="vshare-swf" name="vshare-swf" data="http://YOURDOMAINNAME/player/recent.swf"><param name="menu" value="false"/><param name="wmode" value="opaque"/><param name="bgcolor" value="#ffffff"/><param name="flashvars" value="xml_path=http://YOURDOMAINNAME/recent_viewed_xml.php&amp;title=Videos being watched right now..."/></object>
</center>
This code will show the recently viewed script on forum.