Te falta un parametro para que lo lea IE
Cita: <param name="filename" value="../media/calafat04.wmv" />
y quedaria algo asi:
<object classid="CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95" name="mediaPlayer1" width="320" height="240">
<param name="filename" value="../media/calafat04.wmv" />
<param name="AutoStart" value="true" />
<param name="ShowControls" value="true" />
<param name="AutoRewind" value="true" />
<param name="ShowStatusBar" value="false" />
<param name="ShowDisplay" value="false" />
<embed src="../media/calafat04.wmv" width="320" height="240" autostart="true" name="mediaPlayer1" showcontrols="true" autorewind="true" showstatusbar="false" showdisplay="false" type="application/x-mplayer2"
></embed>
</object>