Where are Apple Loops installed for Logic Pro for Mac and MainStage?
You can find factory and custom Apple Loops files in the Library folders on your Mac.
When you choose to install Apple Loops included with Logic Pro and MainStage, the files are installed in /Library/Audio/Apple Loops/Apple. The individual patches (CAF files) in each collection are located in these subfolders:
01 Hip Hop
02 Electro House
03 Dubstep
04 Modern RnB
05 Tech House
06 Deep House
07 Chillwave
Apple Loops for GarageBand
iLife Sound Effects
Jam Pack 1
Jam Pack Remix Tools
Jam Pack Rhythm Section
Jam Pack Symphony Orchestra
Jam Pack Voices
Jam Pack World Music
Custom Apple Loops you've created are located in the Library of your Home folder, which you can access from the Finder:
Choose Go > Go to Folder from the menu bar.
Enter ~/Library/Audio/Apple Loops in the "Go to the folder" field.
Click Go.