Load movie

hey guys, i made this short animation with sound on it a couple of days ago. i sync some animation with the music to give it some kick but i later found out later on when i published it to a projector.exe that my movie plays differently on slow or faster computers(some effects lags from the music)…i know it got something to do with the speed of my pc but is there anything i could do to correct this problem???like maybe load evrything first before playing and stuffs?any suggestions would be greatly appreciated.tnx