Sony VGC-RA810G - Manual (Page 126)

Using the remote control
You can open the My Music window by pressing My Music on the remote control or by selecting My Music from the Media
Center Start menu, using the supplied remote control, keyboard, or mouse. You can perform many actions with the remote
control, by pressing a single button.
The remote control must be used within 26 feet (8 meters) of the front of remote sensor unit.
Page 126