I have found the solution - thanks for pointing me in the right direction.
I have managed to let it play inside your own page:
Modify the youtubegallery.php.
add the first line below with the str_replace line before the $outputHTML line
than replace the $outputHTML line as shown below.
$video->player_url = str_replace("watch?v=","/v/",$video->player_url);
$outputHTML .= '<object width="425" height="344"><param name="movie" value="'.$video->player_url.'"></param><param name="allowFullScreen" value="true"></param><embed src="'.$video->player_url.'" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="344"></embed></object><div class="info"><h6>'.$video->title.'</h6><p>'.$video->description.'<br/><strong>Duration : </strong>'.$duration.'</p></div>';
Thanks