Pavel posted Feb 2, 05:18:
http://www.samplerbox.org/forum/23

I have implemented %%velocitysensitivity option for patches to change volume depending on velocity
https://github.com/paul-at/SamplerBox/tree/velocity-sensitive

Install

git clone https://github.com/paul-at/SamplerBox/tree/velocity-sensitive
cd SamplerBox; make

Instructions

Add %%velocitysensitivity=1 to definition.txt in patch directory. If it does not exist already, create following:
%midinote.wav
%%velocitysensitivity=1