A fade out/in in button that can be attached to a channel fader. My main use would be for the Aux channel to fade break music, with a settable fade time. I have made an Arduino box that does this via Midi CC messages, but would be nice to do it from the app directly. My Arduino code fades and mutes/unmutes the other channels too, so that would be cool as an option if possible. Thank you for all you hard work!