setup 3d audio

Hi all,

I can't setup  a 3D audio with openal i dont understand what is the
problem, can someone help pls?.

source code:
int main(int argc,char** argv)
{
    ASS_Device* mydevice=NULL;
    ASS_Audio audio;
    float x=0,y=0,z=0;
    ASSfloat	listenerOri[]={5.0,0.0,5.0, 0.0,1.0,0.0};
    char val=0;

    if ((mydevice=ASS_InitDevice(ASS_ALSA_DEVICE)))
    {
        alListener3f(AL_POSITION,x,y,z);
        alListenerfv(AL_ORIENTATION,listenerOri);


ASS_LoadAudio("/home/coolbreeze/Documents/libs/fmodapi43000linux/fmoddesignerapi/examples/media/music/layer-drums-d.ogg",&audio);

        alSource3f(audio.source,AL_POSITION,20.f,0.f,20.f);
        alSource3f(audio.source,AL_VELOCITY,0.0f,0.f,0.f);
        alSourcei(audio.source,AL_LOOPING,AL_TRUE);
        ASS_PlayAudio(audio);
        do
        {
            val=getc(stdin);

            x+=0.5;
            z+=0.5;
            printf("%.2f\n",x);
            alListener3f(AL_POSITION,x,y,z);

        }
        while (val!=27);

        getchar();

        ASS_FreeAudio(&audio);
    }

    (void)argc;
    (void)argv;

    ASS_Close();
    return 0;
}


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