Key Mapping

Quick question: After a game is encrypted etc. can the player still change the keys? I want to know if I have to tell them, for instance, if a button is  'C' instead of simply 'Z'.

You could check this out yourself, y'know. I believe they can still, since it's the game player that you're modifying rather than the open game file.

I never tried it before, it's a lot simpler than I thought. Anyways, I'm bummed out that the player can change the controls, Z looks so much cooler on my animations than C and now I have to change some of them back. :/

I'm sure they can.  The game itself is like an RGSS player and has all the options in it and the controls are just set in scripts typically by using one of their "button names" I guess.  I don't know for sure but I'm almost positive you can.