Apple Soundtrack Pro 2 - Manual (Page 247)

Chapter 6 Editing Audio Files 247
7 Click Save.
When you save an audio file with the same name, location, and extension as the
original audio file, you overwrite the existing audio file.
Using the Timeline Controls in the File Editor Project View
You can use the Timeline controls, located at the lower-left corner of the project pane,
while working in the File Editor project view.
Some of these controls have slightly different functions in the File Editor than they do
in the Timeline.
 Master Envelopes button: You can show or hide the envelopes for the audio file.
 Snapping button: You can turn snapping on or off in the File Editor.
 Snap To button: You can choose the Snap To value that the playhead and other items
snap to. In the File Editor, the choices for snap are Ruler Ticks and Zero Crossings.
 Track Height control: This sets the height of the envelope rows when you show
envelopes in the File Editor.