you have not the wright video or audio codex installed.
here is a link with nice links <img src="/ubbthreads/images/graemlins/ouch.gif" alt="" /> <img src="/ubbthreads/images/graemlins/confused.gif" alt="" /> <img src="/ubbthreads/images/graemlins/biggrin.gif" alt="" />
codex try also th eG-spot link. this program analises the video file and tell you witch codex you have to install to play it !
