I understand now that I can add commands to personal Launcher. But I don't know what needs to be there.

I'd like to put a play/pause, next, back, and stop for default media player. This way I can have the screen rotated and the buttons in the easiest place to hit while I'm driving.
Can anyone tell me how to do that? Also, does anyone know if it's possible to put rotate commands in personal launcher (rotate support from community SSU considered of course)? That way I can rotate and push play in a couple of taps while driving.
Any help is appreciated! =)