Detects whether the specified digital sound device is available. allegro game programming library.
#include <allegro.h>
int detect_digi_driver(int driver_id);
Detects whether the specified digital sound device is available. This function must be called _before_ install_sound().
Returns the maximum number of voices that the driver can provide, or zero if the hardware is not present.
install_sound(3alleg4), reserve_voices(3alleg4)