On my system (Mac OSX 10.10.4) the following code produces only the first utterance. The second one is produce when the user interacts in some way with the front end (mouseover, mouseclick). How can I avoid this strange behavior and produce timely speech?
Speak["you say goodbye"]
Speak["and i say hello"]
Speak["you say goodbye [[slnc 1000]] and I say hello"]
? Is this the kind of things you want to do ? $\endgroup$Run["say " <> "you say goodbye"] ; Run["say " <> "and i say hello"]
(only works on OSX) $\endgroup$