Question about Windows Movies Maker

[Batman1939]

Im going to make a video but theres sound with it already and i want to remove the music which is already there and change it with other music anyone help please.

 

[04nbod]

there is a timeline at the bottom that has audio/music right click and press mute on your chosen clip(not the picture the audio bar). your chosen song will be put underneath it in the music bar- hope that made sense