Set the source in the WireTap Studio controller. Use the Record, Stop and Pause buttons in the controller to make a recording.
Set the file format using the Format Presets menu in the controller, or in the Format pane of the WireTap Studio Preferences.
Set the saving options in the Saving pane of the WireTap Studio Preferences.
For more complete instructions launch WireTap Studio and go to the Help menu and select WireTap Studio Help.