Volunteering for LibriVox
The following information is from http://librivox.org/volunteer-for-librivox/
LibriVox volunteers read and record chapters of books in the public domain (books no longer under copyright), and make them available for free on the Internet. Practically, this means we record books published before 1923. All our recordings (including yours, if you volunteer for us) are also donated into the public domain.
We record books in all languages.
You do not need any prior experience to volunteer for LibriVox, nor do you need to audition or send us samples. All you need is your voice, some free software, your computer, and maybe an inexpensive microphone.
All LibriVox activity (book selection, project management, discussion, etc) happens on our Forum, and you’ll need to register there to join us. Our forum members are a friendly bunch, and questions will be answered there quickly (much more quickly than if you send us an email!).
We do suggest you read the document below, before registering and posting on the Forum, to get an idea of how everything works.
 About Recording
Many LibriVox volunteers have never recorded anything, certainly not audiobooks. If you are new to recording, you’ll find many helpful people on the forum who will help you get yourself set up. Here is an overview, About Recording for LibriVox.
 LibriVox and OLPC
OLPC plans to package and bundle as much of LibriVox's content as possible. If you would like to record an audiobook of materials that is already in the public domain, please do so though Librivox. If you have recorded an audiobook for Librivox that you would like to see included in the OLPC library, please see the page on library bundles or contact the curator Seth Woodworth.
 Combining Librivox Audio and Gutenberg text
If an audiobook is available on Librivox and its text is available in HTML format, why not combine the two? By adding a generic multimedia player and a quickly-customized script, you can make a read-along book. Clicking "next" will jump to the next chapter in the audiobook and in the text.
You can see how it works by viewing a Sample Book in Firefox or Chrome.
OLPC would prefer to use the Speex codec for all spoken word materials.