You can do it very easy by using bbcode.
Add a bbcode with the following information included :
Tag : wmv
Replacement :
<object classid="clsid:6BF52A52-394A-11d3-B153-00C04F79FAA6" id="Player" width="400" height="300">
<param name="URL" value="{param}">
<param name="rate" value="1">
<param name="balance" value="0">
<param name="currentPosition" value="1">
<param name="defaultFrame" value>
<param name="playCount" value="1">
<param name="autoStart" value="-1">
<param name="loop" value="-1">
<param name="currentMarker" value="0">
<param name="invokeURLs" value="-1">
<param name="baseURL" value>
<param name="volume" value="100">
<param name="mute" value="0">
<param name="uiMode" value="full">
<param name="stretchToFit" value="0">
<param name="windowlessVideo" value="0">
<param name="enabled" value="-1">
<param name="enableContextMenu" value="0">
<param name="fullScreen" value="0">
<param name="SAMIStyle" value>
<param name="SAMILang" value>
<param name="SAMIFilename" value>
<param name="captioningID" value>
<param name="enableErrorDialogs" value="0">
<param name="_cx" value="7938">
<param name="_cy" value="6482">
<embed type="application/x-mplayer2" pluginspage="http://www.microsoft.com/windows95/downloads/contents/wurecommended/s_wufeatured/mediaplayer/default.asp" src="{param}"
rate=1
balance=0
currentPosition=1
playCount=1
autoStart=1
loop=-1
currentMarker=0
invokeURLs=-1
volume=100
mute=0
uiMode=full
stretchToFit=0
windowlessVideo=0
enabled=-1
enableContextMenu=0
fullScreen=0
SAMIStyle
SAMILang
SAMIFilename
captioningID
enableErrorDialogs=0
_cx=7938
_cy=6482
width=400
height=300>
</embed>
</object>
Use Option : No
Example : test
If you need an example : http://www.ayyas.com/t10677-tavan-niyeti-bozarsa.html