VIDEO TRANSCRIPT: Selecting Your Audio Settings BigBlueButton will now let you change your speaker and microphone on the fly. Here I am joining the audio bridge, giving the browser permission, going through the echo test. Once I'm in the audio, I can click the phone icon and change my microphone speaker. I don't have to leave the audio to do this. Also, if I'm muted, BigBlueButton will tell you if you're muted when you're talking, and you can hide that message just by clicking on it. Finally, to leave, just click the phone and leave audio.