Music or sound files have been deleted because of memory card format? If it is and you want to undelete them effectively without damage, please recover it with free Data Genius. http://www.isunshare.com/data-genius.html
Simple steps to undelete memory card lost music or sound files:
Step 1: Download and install Data Genius on your computer.
Step 2: Select drive, scan drive and preview deleted music or sound files in selected drive.
Step 3: Check the music and sound files, and undelete them with "Recover" button.