The doubletalk LT is an external speech synthesizer, that runs off a cereal
port. It works under dos or windows, works with Jaws or window-eyes, jaws
for dos, vocal-eyes, or ASAP. Probably a few more. People either love or
hate the speech, which is true of most synthesizers. Their might be a way
to run it under lynnox, or unix, but that's beyond me.