LinkSound is a toolkit for generating audio. The concept is based on Reason (written by Propellerhead Software) and goes like this: You insert devices into a rack. The devices can be connected almost arbitrarily. Right now, there is one input device (Oscillator), two output devices (Soundcard, to play audio on the speakers, and FileOutput, to output raw data to a file) and two gateway devices (Dumper, to examine the data routed through, and Mixer, to combine several inputs).
Right now, devices can be routed. There is no user interface. Pretty much everything must be hard-coded.