Can you give more details please..
The movie you edited, where did it come from, what file type was it?
When you saved it as a wmv how did you do it?
Can you try saving it as a dv-avi file/or one of the other choices, like
pocketpc and see if that works?
What are you playing it in?
The music, what file type was that?
Did you have a sound track from the original movie, can you hear this?