Wanted to make a finger drumming arduino MIDI box, is there avaliable the version with mutegroups?

Hello there, I've successfully made an arduino "midi fighter clone". It works excellent with some software like ableton live and drum racks. Just tried with samplerbox and it works great!. I got one thing that I need to resolve; I want to choke a sound with mutegroups (choke group in ableton live). Is there a workaround? I've seen comments where some versions or config files let us use some functionality like that. Really don't know what version to download or how is the .txt configuration. Any help or pointing me to the right direction will be great!

Thank you very much in advance!

Malaca