This box encloses a Raspberry Pi model B and an Arduino Mega 2560 with firmware to act as a MIDI device that translates note on/off to discrete that flip SainSmart's optically isolated relays that open/close the hot lines to a patch-bay of wall outlets used to power LED holiday light strings. MP3 audio files will be played with the MIDI files using the (Raspbian) Linux ALSA MIDI sequencer and mpg123 to play the audio, using the PiFm project to use GPIO4 (pin 7) as a low-power tune-able FM broadcast station for cars to tune in and hear the music better. Ultimate goal is to be able to take any audio file, program a MIDI file to flash the lights with the music, and then pair up those files so that a cron task plays the different songs while my neighborhood does it's annual holiday light up.