button 
again to stop playback. During playback, press the REC button to pause playback, press the REC button again to continue playback.
Volume adjustment:
During recording playback, you can press the
Previous, Next song
During recording playback, press the up button ▲ or down button ▼ to skip to previous,
next song.
Control procedures as below:
Audio playback menu:
Under audio playback mode, press the MENU button to display the audio playback menu.
Delete single audio
1.Press up button ▲ or down button ▼ to select the single audio choice to delete, then press the confirm button 
.
2.Press up button ▲ or down button ▼ to confirm or cancel, press the confirm button 
to either delete single audio or cancel deletion (protected files cannot be deleted).
Protect single audio
1.Press up button ▲ or down button ▼ to select the single audio choice to protect, then press the confirm button 
.
2.Press up button ▲ or down button ▼ to confirm or cancel, press the confirm button 
to either protect single audio or cancel protection, a lock icon 
will now appear on the upper right corner of the screen (apply protection to protected files to unprotect it).
Delete all audio
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