SpeechUtil is a Firefox add-on that allows you to listen the english text, selected in the web-page. Add-on converts selected text into the speech in OGG format.
# Install SpeechUtil : Link
Step 1 : After installing restart browser.
Step 2 : Simply select some text on any webpage.
Step 3 : Right Click and select "Listen Selected Text" menu-item in the context pop-up menu.
You can click the yellow speaker icon in the right-bottom corner of the browser window.
Step 4 : Speech window will appear on the screen and you will be able listen to text, you just selected.
This an useful way to listen to news online or just convert any article into speech and listen to it instead of reading it.
Note: You can actually download the .ogg file (audio of selected text) if you have the video download helper (add-on) installed.