Apple Final Cut Express 4 - Manual (Page 500)

500 Part VII Fine-Tuning Your Edit
4 Use the Ripple tool to trim the above selection.
The video and audio edit points move in opposite directions, creating a split edit.
Audio/video synchronization is maintained in both clips.
Note: In this example, Command-clicking the In point of a stereo pair of audio clip
items results in adding both audio items to the selection. You can also Option-
Command-click a single audio item to add it to the selection individually, without
including other audio items linked to it. This can be especially useful for clips in which
many audio items are linked to a single video item in the Timeline.
This clip remains
the same length.
Incoming audio clip
is trimmed shorter
from its In point.
Outgoing video clip
is trimmed shorter
from its Out point.
This clip remains
the same length.
After