Stem Deck Mapping Separating Output Signal To Light

hello everyone,

i am doubtful this is possible, and wanted to confirm.

for a stem deck, traktor separates the 4 stems and shows the visual waveform of each of the separated stems.

i would like to take the output signal of each of the 4 separate stems, and map it to a light output / led indicator for each individual stem.

i want the indicator to light up only when there is sound being output from an individual stem thereby seeing which stem is outputting sound at a quick glance.

i am going to assume there is no way to do this but i am hopeful that i've missed something.

thanks!