Apple Soundtrack Pro 3 - Manual (Page 170)

Every selected clip under the playhead now fades in from the beginning of the clip to
the position of the playhead.
To fade out selected audio clips from the playhead
1 Set the playhead at the point where you want the fade out to begin, then select the clip
or clips you want to fade out.
You can fade out multiple clips in the same operation.
2 Choose Clip > Fade Out from Playhead (or press Option–G).
Every selected clip under the playhead now fades out from the position of the playhead
to the end of the clip.
To fade in audio clips on selected tracks
1 Set the playhead at the point where you want the fade in on the clip or clips to end.
2 Select the track or tracks containing the clip or clips you want to fade in.
3 Choose Clip > Fade In to Playhead (or press Option–D).
Every clip under the playhead on the selected tracks now fades in from the beginning of
the clip to the position of the playhead.
170 Chapter 6 Working in the Timeline