I've added the IR Library from another source - GitHub - Arduino-IRremote/Arduino-IRremote: Infrared remote library for Arduino: send and receive infrared signals with multiple protocols . Plus I added #include "Arduino.h" as suggested. Now I'm getting this error:
IRremote\IRremote.cpp.o: In function
MATCH(int, int)': /IRremoteInt.h:176: multiple definition ofMATCH(int, int)'
ir_remote_rgb_led.cpp.o:C:\arduino-1.0.1\libraries\IRremote/IRremoteInt.h:176: first defined here
IRremote\IRremote.cpp.o: In functionMATCH_MARK(int, int)': /IRremoteInt.h:177: multiple definition ofMATCH_MARK(int, int)'
ir_remote_rgb_led.cpp.o:C:\arduino-1.0.1\libraries\IRremote/IRremoteInt.h:177: first defined here
IRremote\IRremote.cpp.o: In functionMATCH_SPACE(int, int)': /IRremoteInt.h:178: multiple definition ofMATCH_SPACE(int, int)'
ir_remote_rgb_led.cpp.o:C:\arduino-1.0.1\libraries\IRremote/IRremoteInt.h:178: first defined here