It links to Mono which has the listing:
Mono is a monophonic synth with real-time audio output and a GUI. It includes a square/sawtooth oscillator, a 4-pole (all-pole) low-pass filter, an ADR envelope generator, and a 16-step pattern sequencer. The GUI features controls modelled after a TB-303, including waveform select, oscillator tuning, filter cutoff frequency, filter resonance, envelope modulation amount, envelope decay time, and accent amount controls.
Somehow, I don't think that the right package.
A data munging language.
A Document Object Model CSS implementation in Java.