Issue - After you run the Audio Setup Wizard, your microphone may look activated (i.e., it is still green at the top of the meeting room), but no longer transmits audio. This is a known issue with Flash Player and its integration with the Connect Add-in.
Work-around - The current work-around is as follows:
Mute your microphone by clicking the microphone button. The button displays green with a slash across the icon.
Then, unmute your microphone by clicking on the microphone button a second time. The button displays as green and will start transmitting audio.