it's easy
if you just link to a wmv it will open separatly
if you use the right code it will play in browser
here is the code, you need to change that Movie.wmc part twice:
<object id="MMPlayer1" width=460 height=400
classid="CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95"
codebase="http://activex.microsoft.com/activex/controls/
mplayer/en/nsmp2inf.cab#Version=5,
1,52,701" standby="Loading Microsoft Windows Media Player components..."
type="application/x-oleobject">
<param name="FileName"
value="Movie.wmv" />
<param name="ShowControls" value="1" />
<param name="ShowAudioControls" value="1" />
<param name="ShowPositionControls" value="1" />
<param name="ShowTracker" value="1" />
<param name="ShowStatusBar" value="1" />
<param name="ShowDisplay" value="0" />
<param name="DefaultFrame" value="Slide" />
<param name="Autostart" value="1" />
<PARAM NAME="EnableContextMenu" VALUE="false">
<embed type="application/x-mplayer2"
pluginspage="http://www.microsoft.com/Windows/
MediaPlayer/download/default.asp"
src="Movie.wmv"
name=MMPlayer1 autostart=1
showcontrols=1 showdisplay=0 showstatusbar=1 defaultframe="Slide"
width=460 height=400> </embed>
</object>