OOHOO Text to Speech is a Moodle block that gives the possibility to read out loud the content of a resource.
The Apache server must have an Internet connectivity with a well configurated gateway. Because it is the server that grab sound from Google or Microsoft (To keep them in cache).
Note: You can test you server connectivity by accessing to the page: http://yourmoodleurl/blocks/tts/tts_test.php
For more informations, please go to the online documentation => http://oohoo.biz