Switch to SDL for audio output

Limelight/main.m

@@ -10,9 +10,13 @@
 
 #import "AppDelegate.h"
 
+#define SDL_MAIN_HANDLED
+#import <SDL.h>
+
 int main(int argc, char * argv[])
 {
     @autoreleasepool {
+        SDL_SetMainReady();
         return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
     }
 }