Sound File If the Sound File check button is highlighted, you can play a sound file when the alarm goes off. If it is not already highlighted, click MB1 on the Sound File check button enable playback of a sound file when the alarm goes off. If it is highlighted, click MB1 on the Sound File check button if you want to disable playback of sound files. When it is not highlighted, the other sound file controls are also disabled. Double click MB1 here for step-by-step instructions on Setting the Alarm , including how to play back a sound file when the alarm goes off. Click on OK to use your settings, or click on Cancel to cancel your changes. Additional topics: * Keyboard Bell * Output * Volume * Sound File... * Play * Stop * Sound File Name Entry Field * Alarm Settings * Alarm Message Entry Box * Changing the Clock Display