Sound is not running at Allegro Game Library

Question

I want to making a game with allegro4 on ubuntu.So I improving myself whit tutorials. Today I want to add a sound in my game.

However I can't run the sound. When I compile my code and run the "output" program the terminal give that message:

ALSA lib rawmidi_hw.c:233:(snd_rawmidi_hw_open) open /dev/snd/midiC0D0 failed: No such file or directory

But Program still run.Then When I press the up button(for listening the sound) the program screen is shut down and the terminal give that message :

Shutting down Allegro due to signal #11
Segmentation fault (core dumped)

Here is my code:

#include <allegro.h>

void start();
void finish();

int main(){

        start();

        SAMPLE *soundfile=load_sample("sound.wav");


        while(!key[KEY_ESC]){

             if(key[KEY_UP]){
                play_sample(soundfile,255,128,1000,0);
             }  
        }
        finish();
        return 0;
}

END_OF_MAIN()

void start(){
        int depth,res;
        allegro_init();
        depth = desktop_color_depth();
        if(depth == 0) depth=32;
        set_color_depth(depth);
        res=set_gfx_mode(GFX_AUTODETECT_WINDOWED, 640,480,0,0);
        if(res!=0){
                allegro_message("%s\n", allegro_error);               
                exit(-1);
        }
        install_timer();
        install_keyboard();
        install_mouse();
        install_sound(DIGI_AUTODETECT,MIDI_AUTODETECT,"A");
}


void finish(){
  clear_keybuf();
}