revert audio to use SDL_mixer -- also frontend uses it, so it needs sdlmixer sources
the button for voicepack preview is broken for unknown reasons
/* SDLMain.m - main entry point for our Cocoa-ized SDL app
Initial Version: Darrell Walisser <dwaliss1@purdue.edu>
Non-NIB-Code & other changes: Max Horn <max@quendi.de>
Feel free to customize this file to suit your needs
*/
#import <Cocoa/Cocoa.h>
@interface SDLMain : NSObject
@end