Please follow these steps to add background music to a DVD menu:
1. Click the Customize button. The Customize window will open, shown as below.
2. In the Background Music tab, check Background Music box and click the Add Music icon to choose a background music file from your computer. As you can see, three effects Fade in, Fade out and Repeat have been applied by default. If they are not needed, then, uncheck the checkbox to remove it. You can use the Trim feature to customize the added background music.
Note: The duration of the background music for the DVD menu is 25 seconds maximum, and you can adjust the background music volume using the volume bar.
Tip: Check the Apply to all option to add the music to all DVD menu pages.