const char *args[]={"--verbose=1", NULL};
    inst = libvlc_new (1, args);
    mp = libvlc_media_player_new(inst);

    libvlc_audio_set_channel(mp, 1);
    libvlc_audio_set_volume(mp,10);
    libvlc_audio_set_format(mp,"F32L",outs[op].out_samplerate(),outs[op].out_channels());
    libvlc_audio_set_callbacks(mp, outs[op].out_run,NULL,NULL,NULL,NULL,NULL );