Movie Maker: You can control the audio - under Video tools - edit, go left to the speaker icon, drop-down controls have a slider where you control the sound, slide all the way to the left, and it is mute.

before you do that, get the audio from your video, using this site: https://www.onlinevideoconverter.com/cloud-converter
you can then insert it in your edited video again: on the Home tab, click the note icon, drop down, add music at the current point - select the point first, but you can juggle this afterward also: click the tab Music Tools and you can fine-tune start time, start point and end point, but you can also grab and drag the adio bar to where you want it.