al_is_audio_installed - Allegro 5 API

       Returns true if al_install_audio(3alleg5) was called previously and returned successfully.

Allegro reference manual                                                          al_is_audio_installed(3alleg5)

       al_is_audio_installed - Allegro 5 API

              #include <allegro5/allegro_audio.h>

              bool al_is_audio_installed(void)