It looks like nor Wine or VirtualBox are able to see the device, but, since they come from different manufacturers, you might have more luck using virtualization. For example, I didn't have this problem with the M-Audio Oxygen 2 (first version): the editor was able to see it and interface with it, unfortunally it's no a very good editor.
From what I could understand, the problem comes when ALSA MIDI takes control of the interface, even when its control is "released" to the guest machine, the kernel doesn't really release it completely. Anyway, I'm not a developer, so I should investigate on this more to be sure about my assumption; probably I'm just wrong.
Anyway, give it a shot with virtualization, if it still doesn't work you might want to boot to windows and set a "general" configuration, then use mididings as a "proxy" to control how the mapping is translated to the midi devices you want to connect your MPK to. Since I don't have a real windows pc, I ended up with creating a custom program that interfaces with my Launch Control and, actually, allows much more customization.

Cheers!

Maurizio