You can adjust the audio just like a video clip.
After selecting the added audio file, check the Edit menu at the bottom.
You can mute the audio or adjust the volume from 0% - 500%.
Apply natural background music using the fade function, the most used in background music.
Fade
You can edit the sound at the beginning and end of the audio to be louder or louder.
If you apply a fade at the beginning, it gets progressively louder.
If you apply a fade at the end, it will play in a gradual way.
The duration of the fade can be specified from a minimum of 0.5 seconds to a maximum of 5 seconds.
Normally, when applying a fade of about 2 seconds, natural editing is possible, so the default value is 2 seconds.