Here's a screencast version of the lightning talk on Ruby On Acid that I gave at the Bay Area Computer Music Technology Meetup during RubyConf 2009.
In it I demonstrate hooking a MetaGenerator up to a line drawing program (using wxRuby), using generators to create a WAV file (by creating 8-bit PCM data to import into Audacity), and generating MIDI "music" (via MIDIator).
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