the easy way, may be it will work

double click on Vita synthesize or drag on arrangerr, it will open Midi editor, choose what you want to do.

If you can see Soundpool, File Manager, Synthesizer then good otherwise you have to turn off easy mode. You can do that by

Look at top left there is MAGIX text under this there are two small icon click on right side.

Or you can see the image in this pdf on page 5

How to upgrade MMM 16 & install MMM 16 Premium download version? and How to add MMM 16 Premium extra packages
http://www.magix.info/us/how-to-upgrade-mmm-16-install-mmm-16-premium.online-training.67901.html

Hope this will help you

nihon94