Allegro 4.2.2 problème son

#include <stdio.h>
#include <stdlib.h>
#include <allegro.h>

int main(int argc, char *argv[])
{
    SAMPLE *the_sample;
    int pan = 128;
    int pitch = 1000;

    if (allegro_init() != 0)
        return 1;

    if (argc != 2)
    {
        allegro_message("Usage: '16bit_pcm.[wav|voc]'\n");
        return 1;
    }

    install_keyboard();

    /* install a digital sound driver */
    if (install_sound(DIGI_AUTODETECT, MIDI_NONE, NULL) != 0)
    {
        allegro_message("Error initialising sound system\n%s\n", allegro_error);
        return 1;
    }
     /* read in the WAV file */
    the_sample = load_sample("D:/Codeblocks/projets/16bit_pcm3.wav");
    if (!the_sample)
    {
        allegro_message("Error reading WAV file '%s'\n", argv[1]);
        return 1;
    }

    if (set_gfx_mode(GFX_AUTODETECT, 320, 200, 0, 0) != 0)
    {
        if (set_gfx_mode(GFX_SAFE, 320, 200, 0, 0) != 0)
        {
            set_gfx_mode(GFX_TEXT, 0, 0, 0, 0);
            allegro_message("Unable to set any graphic mode\n%s\n", allegro_error);
            return 1;
        }
    }
     /* start up the sample */
    play_sample(the_sample, 255, pan, pitch, TRUE);

    /* destroy the sample */
   destroy_sample(the_sample);

   return 0;
}
END_OF_MAIN();