Hi, Please can anyone help me, I purchased the midi control section of the package, it's the one that says I can control my Yamaha keyboard voices through my iPad, or that's how I understood it. Anyway I have used garage band and others which have worked perfectly well but this app only works on the iPad with no sound through the Yamaha however when I press the keys on the Yamaha the keys on the iPad keyboard depress also but the iPad stays silent. I find this odd, I use a camera connection kit to hook iPad to keyboard. I've tried uninstalling it but no joy. Did I misunderstand what this app does, only it seems clear to me. The thing is there only seems to be info on here regarding the midi designer but there's more to it and some help would be really good. The app also crashes and I have to restart it.