For some reason I cannot post in the JT forum....

But seeing as you released the source, and I have no idea how how to code in c, would it be possible for someone to make the following modifications?

1. Use one of the available board inputs as a mute i.e. when power is applied to it, the jt attenuates fully, and when power is removed, it returns to its previous volume setting
2. Use two of the available inputs with pushbuttons to control the volume up/down (still using the pot, it just takes preference to whatever has been used last, the pot or the push-buttons)

I think number one would be the easiest to implement, and the most helpful!