BibleStudyTools.com, Bible Gateway and Talking Bibles International all offer a free audio Bible online. Bible Gateway also offers a large variety of devotional audio clips as a guide.
Liberty University puts out the audio bible resources on BibleStudyTools.com. There are three translations available: the King James Version, the World English Bible and the New Living Translation. These resources can be downloaded onto the iPod, iPhone, tablets and many other portable media players.
Talking Bibles International is a not-for-profit organization that offers audio Bibles free online in over 100 languages. Its stated task is to make the Scripture available to those who cannot read.