<object id="Player" classid="CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6"
width="320" height="304">
<param name="URL" value="mediafile.wmv">
<param name="autoStart" value="True">
<param name="uimode" value="full">
<param name="captioningID" value="captions">
<param name="SAMIFileName" value="samifile.smi">
</object>
<div id="captions" style="background-color:black; color:white; width:320px; height:70px">
</div>

The URL value can also reference an ASX file. If the ASX file contains information about where to find the SAMI file, the SAMIFileName param can be removed.