I think I may have the same problem.

A user uploaded this video:
http://www.gaiagonewild.com/view/204/vo ... xperiment/

The've re-uploaded it twice now and still now sound. My user tells me that it should have sound and he wants to know if I can fix the problem. I checked and it is a 3gp file format, also I am being hosted by HostOnNet so I would think it should work.

Thank for your help,
GG