The script sounds an alarm if any hit has less than 5 minutes left. This is to help you out so you know you better hurry up. You can change the minutes it will sound the alarm at or alarm sound in the Options/Alarms menu. If the alarm is sounding and you click on the continue or return link then the sound will stop until the next time the queue gets updated. You can also quickly mute the queue watch alarm only by clicking on the checkbox to the right. This will only mute this alarm and leave all other alarms alone.