Ok try this. Set up four sounds for layer under the LAyER feature. Make sure they are all in line ie slot 1, 2, 3, 4. Once you have that, hit the mixer button and make sure your volume is highlighted. All four should be lit so you can control them with the wheel over there. Now you wont do that, we want to layer everything on the fly, so use the four knobs to the left of the screen to mix. Should work. If it doesnt, I'll try resetting my board, and learning the process from scratch. Save the layer setup. Done