I’ve been playing with free online Text To Speech software. Some of them had a text limit but this one doesn’t seem to have a limit. It’s the ReadTheWords.com. With it you can make just a mp3 file from your text or both audio and a virtual person talking:
Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.
Here is a quote for you!