First add the video on filmorago timeline. Add transitions & effects.
Click on music and click my music then click on online.
Click on the plus button to add that track on timeline.
Play the video to check it. You can see audio is bit long so we will need to split it.
So click on the audio track on timeline go to the end of the audio and then click on split option.
Select the audio clip to delete. Click on delete option.
To increase or decrease the volume of audio click on audio track on timeline.
Click on volume and then use the slider to increase or decrease the volume.
Click on fade and then drag the fade in and fade out sliders to add fade in / out effect