al_load_sample_f - Allegro 5 API

       Loads  an audio file from an ALLEGRO_FILE(3alleg5) stream into an ALLEGRO_SAMPLE(3alleg5).  The file type
       is determined by the passed `ident' parameter, which is a file name extension including the leading dot.

       Note that this stores the entire file in memory at once, which may be time consuming.  To read  the  file
       as it is needed, use al_load_audio_stream_f(3alleg5) or al_play_audio_stream_f(3alleg5).

       Returns the sample on success, NULL on failure.  The file remains open afterwards.

              Note:  the allegro_audio library does not support any audio file formats by default.  You must use
              the allegro_acodec addon, or register your own format handler.

       al_load_sample_f - Allegro 5 API

al_register_sample_loader_f(3alleg5), al_init_acodec_addon(3alleg5)

Allegro reference manual                                                               al_load_sample_f(3alleg5)

              #include <allegro5/allegro_audio.h>

              ALLEGRO_SAMPLE *al_load_sample_f(ALLEGRO_FILE* fp, const char *ident)