Available options:
(1). If you are using itunes, open my music, select the itunes folder, then itunes music, and find the artist and song you'd like. Now that you've added your music, take some time to look at the sound wave bars that the music creates.
(2). Some of it will appear automatically on your desktop, so be prepared to put in some extra time. Start the basic message, following the steps outlined above.
(3). Set the time of use from 1 (or up to 6) minutes, to any, and just experiment a bit to see what works. Save the file for offline use.
(4). You can upload audio file for any video you wish. It doesn't have to be the original video-just the cover image (with just the rest of the credits).Choose from options above and answer: What most naturally follows?

How to synchronize video and music with windows movie maker
Open windows movie maker.
You can find it easily by searching it into your start bar, or by downloading the version i have provided in things you need.
Take the time to upload the audio file you have chosen.
Answer:
(1).