Apple Soundtrack - Manual (Page 136)

136 Chapter 8 Working with Audio Effects
To add multiple effects to an effects chain, do one of the following:
m Double-click the effect you want to add in the Effect list.
m Select the effect in the Effect list, then click the Add Effect button.
The effect appears in the Effect Parameters area below any previously added effects.
You can now set the parameters of the added effect.
Note: Adding more than a few effects to an effects chain can cause extreme changes
to the sound of a project. This may be what you want, but in some cases can produce
undesirable results. Listen to the project as you add effects to be sure you are satisfied
with the results.
To reorder effects in an effects chain:
m In the Effect Parameters area, drag the effect up or down in the list to change its order.
Select the effect you
want to add, then click
the Add Effect button.
You can also drag the
effect to the Effect
Parameters area.
Drag effects up or down
in the list to reorder them.