3) Make the movements of sliders more smooth. It could be done by means of
check box "smooth changes" in INCREMENTAL mode. While it's active, sliders
will gain new position with slight (regulated) inertia. IT'S VERY IMPORTANT
- music wont be "jumping" fast/
3.1) Interpolate sliders between values to smoothen changes slightly, but
faster then "inertially"
3.2) Useful delta mode, when movements unly SHIFT current tracker position, no absolute use of tracked coordinates: Xnew= Xold +(Xtrackednow-Xtrackedbefore)
CROSS-TRACKER, indicating current position needed to watch for movements.