Background: There are several USB Volume controller. I have a cheap generic one - the more famous version is the Griffin Powermate.
While volume control is all Very Nice, what I Really Want is to use this knob within my own apps. Most obvious use: frequency tuning of Software Defined Radios.
Question: Is it possible to "redirect" the function of a USB volume control, allowing you to adjust some other system variable? Bass, treble, screen brightness, "temperature" in Adobe Photoshop? Hook up 2 and make a giant Etch-a-Sketch?
Windows is my OS of preference, but I'm sure the same concept / questions can be asked in Linux.
All I have found (so far) is about getting the Powermate to work in Linux.