1) Take an iPod, iPod Nano, or other digital jukebox of choice, and tape the earbuds to the boom microphone of your headset.
2) Select the transmit switch on your ARCDU to "PA," and press the "PA" button.
3) Use tape to hold the push-to-talk switch in the "transmit" position.
4) ROCK OUT!!! Set the volume knob to "11" and turn your mundane maintenance delay into a two hour festival of headbanging, air guitar playing, lipsyncing, regrettable disco moves, and maybe even a polka or two.
Note: It is suggested that you disassemble the above sound system before the aircraft is approached by any VP, chief pilot, or check airman.