#include <AudioToolbox/AudioToolbox.h>#include <CoreFoundation/CoreFoundation.h> // Define a callback to be called when the sound is finished// playing. Useful when you need to free memory after playing.static void MyCompletionCallback (    SystemSoundID  mySSID,    void * myURLRef) {        AudioServicesDisposeSystemSoundID (mySSID);        CFRelease (myURLRef);        CFRunLoopStop (CFRunLoopGetCurrent());} int main (int argc, const char * argv[]) {    // Set up the pieces needed to play a sound.    SystemSoundID    mySSID;    CFURLRef        myURLRef;    myURLRef = CFURLCreateWithFileSystemPath (        kCFAllocatorDefault,        CFSTR ("../../ComedyHorns.aif"),        kCFURLPOSIXPathStyle,        FALSE    );     // create a system sound ID to represent the sound file    OSStatus error = AudioServicesCreateSystemSoundID (myURLRef, &mySSID);     // Register the sound completion callback.    // Again, useful when you need to free memory after playing.    AudioServicesAddSystemSoundCompletion (        mySSID,        NULL,        NULL,        MyCompletionCallback,        (void *) myURLRef    );     // Play the sound file.    AudioServicesPlaySystemSound (mySSID);     // Invoke a run loop on the current thread to keep the application    // running long enough for the sound to play; the sound completion    // callback later stops this run loop.    CFRunLoopRun ();    return 0;}