LibriVox is a non-profit organisation that provides free audiobooks from the public domain. They keep it free by having volunteers record the books and proof-listen to them and always need more volunteers.
I've recently signed up as a reader, and love it! It's great fun :-) If you like reading, and especially if you like reading aloud, come help us out. The only thing you need is a microphone - recording and editing software can be downloaded for free.
Works I've done so far: (IP=In Progress, C=Completed, links are provided to the completed books)