static bool cereproc_printPageLoads;

static File cereproc_silent(S voice, S text) {
  text = trim(text);
  if (empty(text)) null;
  text = text.replaceAll("\\s+", " ");
  if (l(text) >= 100) text = shorten(text, 100) + md5(text);
  File file = prepareCacheProgramFile("#1004759", voice + "/" + urlencode(text) + ".mp3");
  if (!file.exists()) {
    O anim = miniLoadingAnim("Speaking...");
    try {
      S url = getSoundURLCereproc(text, voice);
      if (cereproc_printPageLoads)
        print("CEREPROC: " + text);
      
      saveBinaryFile(file, loadBinaryPageSilently(url));
    } finally {
      disposeWindow(anim);
    }
  }
  ret file;
}