svoid flite_say(S voice, S text) {
  File f = javaxCachesDir("flite.wav");
  S cmd = "flite -voice " + voice + "-t " + platformQuote(text) + "-o " + platformQuoteOpt(f);
  backtick(cmd);
  lock voiceOutputLock();
  playWAVAndWait(f);
}