Instructions
Transfer Music
Attach the USB drive to the PS3 by plugging it into the USB port on the front of the console.
Turn on your PS3.
Move through the PS3's main menu and stop on the "Music" icon (it looks like a musical note).
Navigate through the "Music" section to the "Storage Media" icon and select it to view your music files.
Select each file you want to transfer to your PS3's hard drive and press the "Triangle" button to begin copying the files.