I would like to be able to control the volume of samples (while playing) via cc7 instead of cc1.
(Why? I'm using a WX5 breath controller. It gives me a choice of cc1 or cc7 for breath pressure output, but there's a problem with cc1. As pressure goes down to zero, cc1 also goes down to zero but GPO goes down to ppp and then cuts off abruptly. Consequently the end of notes sounds all wrong, especially when playing quietly. So I switch to cc7, which is supposed to control the volume output from GPO down to zero.)
My problem is that cc7 seems to have no effect on GPO's output at all.
I have told GPO to accept cc7 input in the Options dialog, and as I play I can see the volume knob on GPO going up and down, so I know the signals are getting to it. However my ears and the level meters on the mixer tell me that GPO is simply not paying any attention to this input -- the volume is not changing at all.
Is this a bug or am I missing something/doing something silly?