Display Modes
From JRiverWiki
To easily switch between windowed and full screen display modes, double-click on the display area of the screen.
You can also right-click on the display area and select one of the view modes: Standard, Windowed, Fullscreen, or Theater.
When in Internal Mode, you can show or hide the Channels by clicking on the Channels button 
. You can also hide or show the organization tree by clicking on the arrow pointing towards the left on the Organization Tree Splitter Bar.
