Select setting for USB connection
Press Applications.
Press Settings.
Press Wireless and network.
Press USB utilities.
Press Connect storage to PC.
Connect phone and computer
Connect the data cable to the phone socket and to your computer's USB port.
Press Connect USB storage.
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.