al_destroy_sample_instance - Man Page

#include <allegro5/allegro_audio.h>

void al_destroy_sample_instance(ALLEGRO_SAMPLE_INSTANCE *spl)

Detaches the sample instance from anything it may be attached to and frees it (the sample data, i.e. its ALLEGRO_SAMPLE, is not freed!).

al_create_sample_instance(3)

al_create_sample_instance(3), al_destroy_sample(3).