Instructions
Turn on your PS3, and then select your username to log in.
Insert your USB flash drive into one of the USB ports on the PS3.
Use the left and right arrows on your controller to navigate to the "Music" menu.
Use the up and down arrows to scroll through your music. Stop scrolling when you reach the music file that you wish to copy to the USB flash drive.
Press the "Triangle" button on your controller to display the "Options" menu.
Scroll to "Copy" and press "X."
Scroll through the list of copy destinations to locate your USB flash drive.
Press "X" to select the drive, and then wait for the file to be copied.