LibriVox is hosting free Christian audiobooks:
Examples:
The Hexaemeron BASIL OF CAESAREA (329 – 379)
The Miracles of the Lord Jesus Christ – Commentary on the Gospel of St Matthew St. John CHRYSOSTOM (c. 349 – c. 407)
Morning and Evening: Daily Readings Charles H. SPURGEON (1834 – 1892)
On Christian Doctrine Saint AUGUSTINE OF HIPPO (354 – 430)
Ten Homilies on the First Epistle of John AUGUSTINE OF HIPPO (354 – 430)
God is Open 