I used to be able to use the microphone but no longer. Have tried everything including 3 browsers: FF, Explorer and Chrome. Have re-installed flash play several times. Have tried even using system restore. The microphone is definitely active as I have checked this in recording devices, properties. When it came time to recording, Duolingo used to display a voice wave animation that showed the voice recording in real time before you pressed the stop button. Now that animation does not come up.