Provided by: allegro5-doc_5.0.11-2_all 

NAME
al_set_default_mixer - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro_audio.h>
bool al_set_default_mixer(ALLEGRO_MIXER *mixer)
DESCRIPTION
Sets the default mixer. All samples started with al_play_sample(3alleg5) will be stopped. If you are
using your own mixer, this should be called before al_reserve_samples(3alleg5).
Returns true on success, false on error.
SEE ALSO
al_reserve_samples(3alleg5), al_play_sample(3alleg5), al_get_default_mixer(3alleg5),
al_restore_default_mixer(3alleg5)
al_set_default_mixer(3all... Allegro reference manual()