Hi - Complete newbie here. I saw the free download for Hypha and decided to try it, so it's my first time playing with Kontakt Player. I understand I need to move an instrument to multirack in order for it to play. But what's the point of having multiple instruments there each on its own separate midi channel? Is there some way to switch between them? Or do I need a fancier MIDI keyboard that support feature? And then once an instrument is in that MultiRack how do you get rid of it? I see how to purge the entire multirack, but not individual instruments?