Audio Drop Out

[dicooper]

The audio that I add to my movies starts at the beginning of a short film and
then mysteriously drops out. I suspected that it was because I was editing
the film, but no matter how short the film is the background music always
stops playing early on.

What could be the source of this problem?

 

[Graham Hughes]

What are your source file types?
Try this first
http://www.myvideoproblems.com/Tutorials/MovieMaker/File_type_compatibility.htm