The JazzMutant Lemur has many possibilities of controlling the built in objects from external sources. In this example Ableton Live is transmitting audio to a MaxMSP pluggo, which in turn translates the volume of that audio into OSC feeding sliders on the Lemur.
These sliders are dynamically updated with the volume of the audio, both by setting the value of the slider, and modulating the light.
The sliders represent the beat and the bassline, and the volume refleced in them is from the track they are controlling. If that wasn't enough the sliders can still be used to control parameters of Ableton Live, in this case a lowpass filter on the drums, and a hpf/delay combination on the bass.
Tags: Ableton Live Jazzmutant Lemur MaxMSP Pluggo visual interface feedback