o bože...
ok, evo tvog koda
<html>
<head>
<meta name="GENERATOR" content="Microsoft FrontPage 5.0">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>New Page 1</title>
</head>
<body>
<object classid="clsid:6BF52A52-394A-11D3-B153-00C04F79FAA6" id="WindowsMediaPlayer1">
<param name="URL" value="C:\acadsplash.avi">
<param name="rate" value="1">
<param name="balance" value="0">
<param name="currentPosition" value="0">
<param name="defaultFrame" value>
<param name="playCount" value="999">
<param name="autoStart" value="-1">
<param name="currentMarker" value="0">
<param name="invokeURLs" value="0">
<param name="baseURL" value>
<param name="volume" value="100">
<param name="mute" value="0">
<param name="uiMode" value="none">
<param name="stretchToFit" value="0">
<param name="windowlessVideo" value="-1">
<param name="enabled" value="0">
<param name="enableContextMenu" value="0">
<param name="fullScreen" value="-1">
<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="5292">
</object>
</p>
</body>
</html>
paste-uj ovo u notepad, pa ga snimi kao active_desktop.htm. payi samo da u notepad-u pod, save as type izabereš all files, inače notepad dodaje .txt na kraju.
jedinu stvar koju menjaš je ova linija
<param name="URL" value="C:\acad_splash.avi">
inače, ne postoji opcija za infinite loop, ali PlayCount = 999 je sasvim dovoljno.