[Sharebear]

The Play/Enter/Pause button is switched with the M menu/function button. Other than that the buttons should be fairly self explanatory.

The slide switch on the bottom is the power button.
The circular arrow button on far top left is the undo or go back to last screen button.
The second top left button is the rewind button for songs and videos or left/up navigation button for the system/file menu.
The top middle left button is the forward button for songs and videos or right/down navigation button for the system/file menu
The top middle right button is the play button not the M(menu/function) button for songs and videos, or the enter button for system and file menus.
The top second from right button is the volume menu option button then use left and right buttons to change volume.
The top far right button is menu/function button not the play/enter/pause button that brings up system menus such as delete file dialogue in the file manager. As well as helps to navigate the in player text writer function for adding your name to the player in the system management area.

another Rizone blog on this site states that to save your settings when you turn off the player to first hold the play button which is the M button for a few seconds and then shut off the machine otherwise settings will revert to factory setting each time you turn the unit off.