Lightbox2 + flowplayer issue

Apologies if i am not using the correct terminology or if this is a touch vague, still learning.

I have both gallery2, Lightbox2 and flowplayer installed on drupal6.

Have a Video Content type with a custom field = field-video

Video will upload and save video along with a thumbnail named Video_Thumbnail_Preset

Using the Display Suite to set the teaser to show all images/videos with Lightbox

Lightbox will load the images perfectly.

The videos on the other hand just get loaded as if they were bad image files. I get a picture of a camera with a circle and slash through it. Underneath though there is a link to download the video. (attached pic)

I am able to load external (youtube) videos using lightbox using this code

<a href="http://www.youtube.com/watch?v=K-CFEPBWI78" rel="lightvideo">Google video example - default size</a>

Which makes me think this isnt an issue with the link to player in the lightbox settings.

Not too sure if i have set this up correctly, any assistance or something to look for would be greatly apprectiated

Thanks