if (!load_midi_mapping_from_file(global_flags.midi_mapping_filename, &midi_mapping)) {
fprintf(stderr, "Couldn't load MIDI mapping '%s'; exiting.\n",
global_flags.midi_mapping_filename.c_str());
if (!load_midi_mapping_from_file(global_flags.midi_mapping_filename, &midi_mapping)) {
fprintf(stderr, "Couldn't load MIDI mapping '%s'; exiting.\n",
global_flags.midi_mapping_filename.c_str());