Sound File and Headphones
If your exam requires a sound file then you are responsible for ensuring that all students have headphones, prior to their exam appointments. Please send a message out to your students, letting them know they are required to bring headphones to their exam appointment. Otherwise, allowing students to take an exam requiring sound, without the use of headphones, would be disruptive to other test takers.
The reason this is your responsibility is because proctors do not have headphones available, and allowing student to take the exam, without headphones, would be disruptive to other test takers.