Apple Final Cut Pro 5 - Manual (Page 863)

76 Part I Media and Project Management
To add keyframes whenever you move an audio fader or panning slider, do
one of the following:
m Select the Record Audio Keyframes button in the button bar at the top of the Audio
Mixer (in the Tool Bench window).
m Select the Record Audio Keyframes checkbox in the Editing tab of the User
Preferences window.
m Press Shift-Command-K.
The Record Audio Keyframes button and the checkbox in User Preferences are the
same control; they are just located in two different places for convenience.
Important: If the Record Audio Keyframes button is missing from the Audio Mixer button
bar, you can drag it to the button bar from the Button List. For more information about
using the Button List, see Volume I, Chapter 10, “Customizing the Interface.”
Source Pop-Up Menu
You use this Pop-up menu to choose whether Canvas or Viewer audio levels are
controlled by the Audio Mixer. If you want the Audio Mixer to automatically switch
between the Canvas and Viewer depending on which window is active, choose Auto.