If you map your MIDI notes to /medias/MyMovie.mov/select your media will be applied to selected surfaces (like in this video): https://www.dropbox.com/s/krb7x43e2dxrk ... t.mov?dl=0
You can select surfaces using the control /surfaces/MySurface/select or surfaces/MySurfaceGroup/select
You can also use the control that is on each surface to change the media of a specific surface or surface group: /surfaces/SurfaceName/mediaNumber. This can be driven by a MIDI CC.
Let me know if you have any problem
Matthieu - MM team