You can use these tabs to add or delete background music as well as change the properties of the added music, such as its volume and fade in&out effect.
Add: click here to select music on your computer. Only music in .wma, .m4a, .wav, .mp2 and .mp3 format is supportable.
Delete: Click it to delete the selected background music.
Properties: Click here to view a pop-up window in which you can change the volume as well as check Fade in and Fade out effect.

