func: void AUD_vlog (const char *cap, const char *fmt, va_list ap)
  
  {
  
      if (conf.log_to_monitor) {
  
          if (cap) {
  
              monitor_printf(default_mon, "%s: ", cap);
  
          }
  
  
  
          monitor_vprintf(default_mon, fmt, ap);
  
      }
  
      else {
  
          if (cap) {
  
              fprintf (stderr, "%s: ", cap);
  
          }
  
  
  
          vfprintf (stderr, fmt, ap);
  
      }
  
  }
  