al_set_voice_position - Allegro 5 API

       Set  the  voice  position.   This  can  only work if the voice has a non-streaming object attached to it,
       e.g. a sample instance.

       Returns true on success, false on failure.

       al_set_voice_position - Allegro 5 API

al_get_voice_position(3alleg5).

Allegro reference manual                                                          al_set_voice_position(3alleg5)

              #include <allegro5/allegro_audio.h>

              bool al_set_voice_position(ALLEGRO_VOICE *voice, unsigned int val)