Please get rid of ctrl+m = open midi file in piano roll

[Michael Dow]

I can't be the only one that uses ctrl M for the metronome more than opening midi files. (In fact i've never ever used ctrl M to open a midi file!)

Having shortcuts change when different windows are open is a little annoying, and this is a huge one for me. Not just that it's changed, but that there is no longer a shortcut when the piano roll is open.