GP3 video files(ie: intro, pole...)

Does anyone know how to edit/change the video files in GP3. Is there a tool that could do the job? Perhaps insert film cuts from other video files to customize the simulator in lets say 'Le Mans-way'...

I found the bink & smacker tool on the www, and unfortunately it is impossible for me to get GP3 to play the audio sound that is 'Binked'/mixed to the video file. Video plays very well but audio is silent in GP3!!! If I play it in B&S-tool it all works fine! Does anyone know what I'm doing wrong...
I'm making a new intro4 movie for Le Mans together with 1st4, 2nd4, 3rd4 and pole4 as well.
Thanks in advance.
Kind regards
shlund