Apple GarageBand '09 - Manual (Page 79)

Chapter 7 Tutorial 5: Adding Apple Loops 79
When you add a loop to a project, a region is created in the timeline for the loop.
Regions appear as colored rectangular areas in the tracks of a project. The edits you
make to the region do not change the original loop, so you can always return to the
original sound of the loop or use it in another project.
Now try adding some of the drum and bass loops you found earlier to the timeline.
Changing Apple Loops in the Same Family
Some Apple Loops belong to a series, or family. Loops that belong to the same family
have the same name, but with a unique number at the end. (For example, Classic Rock
Guitar 01 and Classic Rock Guitar 02 belong to the same family.) When you add a loop
belonging to a family to the timeline, the loop has a pair of arrows in its upper-left
corner. You can change it to any other loop in the same family.
To change an Apple Loop to another loop in the same family:
1 Click the arrows in the upper-left corner of the loop.
A menu appears, showing all the loops in the same family.
2 Choose a loop from the menu.
Adding Loops to the Loop Library
When you install GarageBand, the loops included with the application are installed in
the Apple Loops library. When you add more loops to your collection, they are installed
in the loop library and appear in the loop browser for you to use.
To add Apple Loops to your loop library:
m Drag the loops, or the folder containing the loops, over the loop browser. The loops are
added to the Apple Loops library and are immediately available to use in your projects.
If you add loops located on a different hard disk or partition, a dialog appears asking
whether you want to copy them to the loop library, or index them in their current
location. If you add loops from the desktop, a dialog asks if you want to move them or
index them in their current location.
If you add loops located on a CD or DVD, GarageBand copies them to the loop library.