I am sorry the last solution to your issue was incorrect, well no it wasn't but too complicated for what you wanted.
youtube videos will not play if hidden. so add your embed code and set the autoplay=1 but hide the div and then do the jquery flip on the elements. if you copy the code below and run it it should work (except you have to point it to your jquery library)
<body>
<script type="text/javascript" src="jquery-1.4.2.min.js"></script>
<div id="ytapiplayer2" style="display:none;">
<object width="1280" height="745">
<param name="movie" value="http://www.youtube.com/v/kCfP003Btjw?fs=1&hl=en_US&rel=0&autoplay=1"></param>
<param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param>
<embed src="http://www.youtube.com/v/kCfP003Btjw?fs=1&hl=en_US&rel=0&autoplay=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="1280" height="745"></embed>
</object>
</div>
<img src="https://i.qmyimage.com/mgen/global/zGetImageNew.ms?args=%22shpimg4198.jpg%22,425,96,1" id="imageID" />
<script type="text/javascript">
$('#imageID').click(function() {
$('#ytapiplayer2').show();
$('#imageID').hide();
});
</script>
</body>
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