These options determine how alerts that have been defined in the monitoring & alerts window will be raised by your application.
Here you can specify the sound that should be played for alerts that should play an alert sounds when the alert is raised.
Use the Windows default alert sounds
Play the default notification sound of Microsoft Windows as it has been specified under Sound in the Control Panel of Windows.
Use a custom alert sound
Specify the file name of your own sound file that will be played in case of an alert. Optionally use the Browse... button to locate existing sound files on your computer.