Select setting for USB connection
Press the Menu key.
Press Settings.
Press Connectivity.
Press USB.
Press Mass storage.
Press the Menu key to return to standby mode.
Connect phone and computer
Connect the data cable to the phone socket and to your computer's USB port.
Transfer audio files
Start a file manager on your computer and find your phone in the computer's file system.
Go to the required folder in your computer's file system.
Highlight the required audio file and move or copy it to your phone.