About StiX v1.6 :
StiX v1.6 now handles MIDI triggered velocity on filter, on VCA, and all other Velocity modulations on envelope parameters perfectly. You can now play StiX like any sophisticated drum machine or expander module. Even without the sequencer, you’ll still have great and live, organic sounds.
Additionally some .wav audio files, like Broadcast Waves format, with an embedded extra information chunk in addition to the audio wave content itself did not import successfully in StiX. This is also solved.