Apple Soundtrack Pro 3 - Manual (Page 183)

To use the shortcut menu to make a channel selection from a multichannel clip
µ
Control-click the clip in the Timeline, then choose one of the options from the shortcut
menu.
If you choose a mono option, the clip waveform display changes to a single (mono)
waveform, and the clip functions in the project as a mono file. If you pick a stereo option,
the clip waveform display changes to a stereo waveform, and the clip functions in the
project as a stereo file.
Separating Channels by Option-Dragging
You can separate the channels of stereo and multichannel clips into individual clips as
you drag them to the Timeline. When adding a clip to the Timeline from either the Browser,
Bin, or Finder, holding down the Option key while dragging will automatically generate
mono clips from a stereo or multichannel file. The dragged clip becomes a vertical stack
of clips, with the first under the pointer and the rest on subsequent tracks.
To convert the channels of a stereo or multichannel clip into individual clips as you
add it to the Timeline
1 Option-click the clip in any of the Soundtrack Pro media tabs.
2 Continue to press the Option key as you drag the clip to the Timeline.
Option-drag a stereo
file from the Browser
to the Timeline.
The stereo file is split
into two mono
files—each in its
own track.
183 Chapter 6 Working in the Timeline