See also: set_gfx_mode.
DIGI_AUTODETECT - let Allegro pick a digital sound driver
DIGI_NONE - no digital sound
DIGI_BEOS - BeOS digital output
See also: detect_digi_driver, install_sound, install_sound_input.
MIDI_AUTODETECT - let Allegro pick a MIDI sound driver
MIDI_NONE - no MIDI sound
MIDI_BEOS - BeOS MIDI output
MIDI_DIGMID - sample-based software wavetable player
See also: detect_midi_driver, install_sound, install_sound_input.