first open the audio device


if(Mix_OpenAudio(44100, AUDIO_S16, 2, 2048)){
            printf("Mix_OpenAudio: %s\n", Mix_GetError());
            exit(-1);
};




//below in the load_sound macro , y will be of type Mix_Chunk*

#define load_sound(x,y)   y = Mix_LoadWAV(x); \
                          if(!y) exit(-1);
#define play_sound(x)     Mix_PlayChannel(1, some_Mix_Chunk_pointer_goes_here , 0);