Mp4/Mpeg videos not playing in Robohelp 9 preview

I have RH 9.02 installed on Windows 7 32bit. I'm able to embed captivate files without any problems. However, mp4 and mpeg files that I've inserted  in preview won't play. They play perfectly fine outside of RH. When I try to play the mp4 file, it recognizes it as an audio file rather than a movie but still doesn't produce a sound nor an image.

One time, I got it to start playing but then it just stopped all of a sudden. It shows the quicktime logo so I thought there was a problem with quicktime. I updated quicktime but that still didn't help. I then converted the mp4 file to mpeg and it did recognize it as a movie but it only shows a black screen. Here's the code for mp4 file:

<p><a class="dropspot" href="javascript:TextPopup(this)" id="a2">test</a></p>

<div class="droptext" id="POPUP444337617" style="display: none;">

    <p><object data="../Export2MP3.mp4" classid="CLSID:02bf25d5-8c17-4b23-bc80-d3488abddc6b"

                 codebase="http://www.apple.com/qtactivex/qtplugin.cab"

                 type="video/quicktime" style="border: none;" width="203"

                 height="38">

    <param name="src" value="../Export2MP3.mp4"  />

    <param name="autoplay" value="false"  />

    <param name="autostart" value="false"  />

    <param name="ShowControls" value="1"  />

    <param name="controller" value="true"  />

    </object></p>

Here's the code for the mpeg file:

<p><a class="dropspot" href="javascript:TextPopup(this)" id="a2">test</a></p>

<div class="droptext" id="POPUP444337617" style="display: none;">

    <p><object data="../0001.mpg" classid="CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95"

                 codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=6,4,7,1112"

                 type="application/x-oleobject" style="border: none;" width="640"

                 height="568">

    <param name="filename" value="../0001.mpg"  />

    <param name="autoplay" value="false"  />

    <param name="autostart" value="false"  />

    <param name="ShowControls" value="1"  />

    <param name="controller" value="true"  />

    <param name="WindowlessVideo" value="0"  />

    </object></p>

Here's how it looks in the preview:

Can anyone tell me why I can't play this demo in the preview? The same thing happens even if I insert the file directly on the topic page.

Judy