A while back (2003ish I think) I wrote a DLL extension for Game Maker. Although a lot has changed Game Maker wise, I thought I’d give it a home and a permanent link due to people in the forums still asking about it. You can download it here. Game Maker Text to Speech DLL.
All help/support should be included with the file. Please don’t ask me for help, since I’ve lost my knowledge of Game Maker from being away from it for so long. Who knows, I might make a return. 
