How do you add background music to your windows media video?

Answer:
Audio compatible with Windows Movie Maker includes:

aif, .aifc, .aiff, .asf, .au, .mp2, .mp3, .mpa, .snd, .wav, .wma

Though all the audio formats (file name extensions) listed above are compatible with WMM, the most popular format is MP3. Ensure the audio you are attempting to import into the program is one of those listed above.

Then, locate and import the file. From the Imported Media pane, drag and drop the audio into the Audio/Music track in the time-line view. Click play in the Preview pane to hear results.
Contributor: Wonderful
First answer by Wonderful Wanda. Last edit by Wonderful Wanda. Contributor trust: 151 [recommend contributor recommended]. Question popularity: 1 [recommend question].