The instructor posted an audio (ending in .wav), but I cannot hear it. The sound (loudspeaker icon) is disabled, and I do not see a way to enable it. Is this a problem I can solve myself? If so, how? Might it be a problem with my iPad (6th gen) which I’m using now to access the course? I’m hoping to use my iPad about half the time and my MacBook Pro about half the time. Thanks in advance for any help!