This is a recreation of Nuendo's randomizer plugin. this is a practice project I'm sharing. There are two different uses for this ensemble. One is to create samples from a original sample and the other is from a sound generator plugin. For creating random samples from one sample it works by you needing two channels, one midi and audio channel. You add a reaktor fx plugin to the audio channel with the sample on it and route midi to trigger the fx. For creating random sound with a synth you need two midi channels, one triggering the synth plugin and the other midi channel routed to trigger the reaktor fx plugin. note you will also need to create a midi note on the trigger midi channel to hear the effects of the reaktor ensemble. see your daw's manual on how to route midi. This tool if for creating sample packs or for creating your own sample libraries.
here's a video on midi routing in Ableton. If you are using another daw please check YouTube for routing midi tutorials.