1. Select sound file
In mscape maker, select the sound file you want to change by clicking on it once
2. Choose 'Settings'
Click the Settings button on the toolbar
3. Adjust fading and looping
You will now see the settings window for the sound file you selected.
Tick the Loop box to have the sound play over and over again when activated
Drag the Fade Length slider to adjust how long it takes in seconds for the sound to fade in to full volume
You can also adjust the volume of your sound here using the Volume slider

