This is the IRremote library for the Arduino.

To install, move this directory to:
arduino-00nn/hardware/libraries/IRremote

I.e. after installation you should have files such as:
arduino-00nn/hardware/libraries/IRremote/IRremote.cpp

For details see http://arcfn.com/2009/08/multi-protocol-infrared-remote-library.html

Copyright 2009 Ken Shirriff