Live Prezi - can online attendees hear video?

I am testing a Live Prezi with my co-worker. When I get to a topic that contains a video, she can see it – but not hear it. Is something wrong with her computer setup – or does Live Prezi not allow attendees to hear the audio on embedded videos?

Hello @Glenn_Bostock, could you please send us the view link of the presentation so we can investigate it?