Your video should appear in the Media tab and the first clip will appear in the timeline at the bottom of the window.Stop recording by clicking the Stop button or press the Option-Command-2 key.Wait a few seconds before and after you speak.You will get a countdown and then the recording will start.When you are ready, select Start Recording.Note: If you are recording BOTH your voice and system audio, you will need to wear a headset so the microphone does not record the system audio playing from your speakers. Under System Audio, slide the button to the right to activate that source if your screen content also has audio associated with it.Check the sound meter to make sure the microphone is capturing sound. Camtasia is available for both Mac and Windows. Under the Microphone section, slide the button to the right to activate that source. Camtasia Camtasia allows you to capture and edit screen video with audio.You can select the entire monitor or select a region of your screen to record. Under the Monitor section, slide from a number of options that define the source of the screencast.