If you don't prerecord words (like tape recorder) you should look for Text-To-Speech ( = TTS ) feature. Basically it is like you write a text and then computer speak it to you. MS Agent can do that very well too.
Which version of VFP you have? There is a MS Agent demo in VFP solutions, you might look that first!
>with some other languages
There are numerous of TTS packages available from mandarin to ... hmm. even finnish, I think <bg>
Just browse the MS Agent site and run the demo. There is one 3rd party solution even MS mention in their site
http://www.microsoft.com/msagent/prodinfo/resources.asp (Bonzi) you can download it and see what it does, all tha can be done with VFP too.
AT