Step 1, import audio. You can click the Plus button, select “Import/Add Audio”. Or use the shortcut Ctrl+3. Or just drag the audio into YouTube Movie Maker.
Step 2, drag your audio to the audio line.
Step 3, audio editing. Right-click on the audio to edit, you can Cut(Alt+C), Split(Alt+X), Set Endpoint(Alt + E), etc. You can see all the YouTube Movie Maker Keyboard Shortcuts here.
