Apple Final Cut Express 4 - Manual (Page 612)

612 Part VIII Audio Mixing
To display clip overlays in the Timeline:
1 Open a sequence in the Timeline, then choose Sequence > Settings.
2 Click the Timeline Options tab, then select the Show Keyframe Overlays checkbox.
You can also select the Clip Overlays control in the Timeline.
To display audio waveforms in the Timeline:
1 Open a sequence in the Timeline, then choose Sequence > Settings.
2 Click the Timeline Options tab, then select the Show Audio Waveforms checkbox.
∏
Tip: To avoid opening the Sequence Settings window, you can also press
Command-Option-W while the Timeline is active.
To adjust the audio level of a single clip with no keyframes:
1 Select the Clip Overlays control at the bottom of the Timeline to display overlays.
2 Drag the audio level overlay up or down to adjust the audio level. The overlay is a pink
line if the clip is not selected, and a green line if it is.
The pointer changes to an Adjust Line Segment pointer when it’s directly over the
audio level overlay, and a box displays the change in levels as you drag.
Audio level overlay
Change in audio level Clip Overlays
control