EZ people, recently purchased a novation lanchkey 49 keyboard. Installed all the correct drivers and updated my Ableton live 9 intro to the latest version. It works fine apart from when I leave it alone (do not use it) for a few minutes and come back to it it doesn't work on Ableton. The lights are still on on the keyboard and it does change ocatve and pitch on the screen on the keyboard but no sound is coming out through Ableton, anyone know how to fix this issue? (also ask if this needs any more explaining as I'm finding it hard to put the problem into words haha) Thanks for any advice in advance!