Locking your player will disable all buttons on the player. This feature is useful when you do not want any buttons (for example, Play/Pause) pressed accidentally.
To lock your player
Slide the Hold switch to the right.
The player is locked. The Lock icon 
appears at the top of the LCD screen.
To unlock your player
Slide the Hold switch to the left.
The player is unlocked.
You may at times need to clear your player's memory during normal use. Use Windows Explorer to easily clear your player's memory for the efficient transfer, storage and playback of music files.
To clear your player’s memory
1.Connect your player to your computer.
2.In Windows Explorer, select the drive your player is assigned to, for example, Removable Disk (F:) (replace F: with the drive letter of your player).
Using Your Player