The system comes with a Kodi based standalone Media Player setup called "OpenElec".
Important: Do not start OpenElec unless you have access to a Mouse!
OpenElec can be started in Emulationstation from the Main Menu (accessible with "Start"), Option "Apps".
If you want to return to Emulationstation, move the mouse-cursor to "Programs", click on the little Space Invaders icon and confirm with "ok".
If you are stuck in OpenElec without access to a mouse, pls. refer to the section "Troubleshooting/OpenElec: No Mouse