I'm using v3.3 and have a mp4 video file (531mb) that I'm trying to play from a local server.  I only see a Quicktime logo when I navigate to the player...here's the link.

www.planvirginia.com/index2.php?option=com_content&view=article&id=53&Itemid=64

Any help would be great...I hate the idea of trying to convert this to flv or some other format without any assurance that it's not the player itself. 

Thank you for your help in advance.
 

I would check out this blog post. It will solve your problem by playing the mp4 file using the standard JWPlayer instead of the quicktime player.

www.lifeworldblog.com/css-and-website-design/using-mp4-files-in-k2-joomlaworks-allvideos-plugin-without-using-quicktime

er maybe you can change another sever