rem: driver = TFB_SOUNDDRIVER_MIXSDL;
add: SoundDriver = TFB_SOUNDDRIVER_MIXSDL;
context: TFB_InitSound (int driver, int flags){#ifdef  HAVE_OPENAL	return (TFB_choose_InitSound (driver, flags));#else	if (driver == TFB_SOUNDDRIVER_OPENAL)	{		fprintf (stderr, "OpenAL driver not compiled in, so using MixSDL\n");		driver = TFB_SOUNDDRIVER_MIXSDL;	}	return (TFB_mixSDL_InitSound (driver, flags));#endif}