ok thats great im only really using the sz at the moment so i have deleted all the midi mapping that i was using on the djm800 mixer , it was only a few things so not much to add back in when i go back to using a djm800 again. I will just use the preset midi mapping for the ddj sz i did notice there is alot of mapping even down to the channel pots low,med, high pots do different affects on the video etc i will give thats a go next time im the ddj sz cheers matt