Apple Logic Pro 9 - Manual (Page 83)

11 Select the software instrument track, then click the Inspector button.
The left channel strip displays the software instrument and effect of the selected track.
12 Click the Library tab, and browse through the displayed channel strip settings.
Because this is a software instrument track/channel strip, only software instrument channel
strip settings are shown in the Library.
13 Select one of the channel strip settings to load it.
14 Start playback again to audition the new sound.
Using Logic Pro Interface Elements
You can access all of the buttons, switches, sliders, and menus in the Logic Pro interface
using the mouse and computer keyboard.
83 Chapter 3 Overview of the Logic Pro Interface