Convert Text into Voice/Speech with SpeakIt | Firefox
I know that you all would agree with me if I say that it is very helpful if the text is read aloud, especially for those who can’t see and sometimes when you are so tired that you don’t want to look at your monitor screen to read some lengthy article.
FireFox 2 had a very useful and popular add-on called SpeakIt, the bad news was that after the release of firefox 3 this add-on became incompatible with the latest version that disappointed many people.
Recently, a very clever person changed the compatibility of SpeakIt and made it available for FireFox 3 as well. What this nifty FireFox extension does is that it utilizes text to speech capabilities of the operating system to provide the means to read out text aloud to the user.

It integrates itself nicely in the right-click context menu and can be used to read out all of the text on a website or only the selected text. Additional features have also been added that include rate of reading and volume adjustment, besides that you can change the text to speech engine if more than one engine is installed on the computer system.
Try SpeakIt
