autoPlayVideo="true" and/or autoNextOnVideoFinished="false" can be added to the link to overwrite the slider's default behavior.
<a class="video" href="http://vimeo.com/38375192" autoPlayVideo="true">
<img src="images/img3.jpg" />
</a>
autoPlayVideo="true": starts playing the video automatically as soon as the slide is displayed without the need of clicking on it
autoNextOnVideoFinished="false": stays in current slide when the play is finished without resuming the slideshow