In addition to the main audio script for the models, you can also add background music to the whole project.
To insert background music, click the Background Audio button. The background music dialog box opens.
To insert the background audio, do the following:
Click the Browse button to import a song or musical track in PCM WAV/MP3 format.
Move the Volume slider to adjust the volume. You can also enter a number in the box next to the slider to adjust the volume.
Check the Fade In or Fade Out checkboxes to specify if you want the background audio to fade in or out.
Click the Preview button to play back the background audio.