I have created a movie - stream of pictures with music added.  Problem seems to be when I open the movie up to full screen, the pictures continue to move, but the music doesn't.  As soon as I shrink it down the music is playing.  When I open it back up, the music is there.

Only seems to be a problem when transitioning from one song to the next.

This is a project for my son's high school baseball banquet and I am running out of time....HELP Please