Adding a soundtrack and narration
Make your movie as you would (using AutoMovie or manually) and add a soundtrack. Export the movie (depending on your resolution, we always recommend 1080p).
Once your movie is exported and saved, open a new project in Windows Live Movie Maker.
Click Add videos and photos; add the recently exported movie.
Click Add music. Follow the steps above to add a narrative track.
If you need to adjust audio levels, click Audio mix in the Home tab to make the movie or the audio track (narrative in this case) louder than one another by sliding the bar left or right.