The idea is to use a 8-switch relay (or two) to connect to a Raspberry pi and control the switches according to the music. To control the music, hack mpg123 to take a "frames" file which would contain which channel should be switched on or off. For the basic format: [frame #] channel# channel# -channel# e.g.  3 5 9 -4 would imply switch on 3 5 9 and switch off channel 4.
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