static File cereproc_file(S voice, S text) {
  text = cereproc_preprocess(text);
  print("[" + voice + "] " + text);
  S text2 = text;
  if (l(text2) >= 100) text2 = shorten(text, 100) + "-" + md5(text);
  File file = prepareCacheProgramFile("#1004759", voice + "/" + urlencode(text2) + ".mp3");
  ret prepareCacheProgramFile("#1004759", voice + "/" + urlencode(text2) + ".mp3");
}