Apple Final Cut Express HD - Manual (Page 612)

612 Part VIII Audio Mixing
To set additional keyframes:
1 Move the playhead to another point in the clip where you want to set a keyframe.
2 Do one of the following:
 Drag the Level or Pan slider to set a new keyframe at that level or value.
 Type a number in the appropriate field to set a new keyframe at that level or value.
 Press the Option key and click an overlay with the Pen tool to add a keyframe at that
point without changing the level of the overlay. You can add as many keyframes as
you want by clicking repeatedly with the Option key held down.
The keyframe appears as a small diamond on the overlay you added it to.
To move the Viewer playhead from one keyframe to another, do one of
the following:
m Press Option-K to move the playhead to the next keyframe to the left of the playhead.
m Press Shift-K to move the playhead to the next keyframe to the right of the playhead.
To adjust the level or pan of a single keyframe, do one of the following:
m Move the playhead to the keyframe you want to adjust, then drag the appropriate
slider to a new value.
m Move the playhead to the keyframe you want to adjust, type a new value in the
appropriate field, and press the Return key.
m Move the pointer over the keyframe you want to modify. When it becomes a crosshair
pointer, drag the keyframe you want to modify.
 Dragging a volume level keyframe up raises the volume; dragging down lowers it. As
you drag, a box shows you the current level of the keyframe.
 Dragging a pan keyframe up moves the audio toward the left stereo output channel;
dragging down moves it to the right stereo output channel. As you drag, a box
shows you the pan setting of the keyframe.
 Dragging a pan keyframe for a stereo pair vertically in the waveform display area
transposes the left and right channels of a stereo pair.