Logitech sells a very nice stereo USB speaker system called Z-10. It sounds great and looks very stylish. One of the speakers has a panel with some buttons and an LCD display.
This is where LogitechLCDTool comes in. It provides the missing Mac support for this panel. Logitech does not provide Mac software to enable the display or about half of the buttons. Some buttons do work out of the box because Mac OS X understands their purpose, for example mute and volume up/down are mostly OK.
Without supporting software, the remaining buttons are dead and the display shows “Z-10” permanently, which gets old pretty quickly.