If you want to have your text spoken by a human, this site offers you a program which is called as "Expressivo" copyrighted by IVO Software. Actually, it is a program that reads written text in a human voice. You can use it online at http://say.expressivo.com and even share the spoken text with your friends. Of course, there is a limitation and you can't enter more than 200 characters. But if you want to use it to listen to books, e-mails or RSS feeds, you can also buy it.
For instance;
You can listen the text typed as "Sezgin".
