Although I don't use Wikipedia as my end all source, I thought you might get at least some background.
Wikipedia wrote:In theosophy and anthroposophy, the akashic records (from akasha, the Sanskrit word for 'sky' 'space' or 'aether') are a compendium of mystical knowledge supposedly encoded in a non-physical plane of existence known as the astral plane.
The akashic records – akasha being a Sanskrit word meaning "sky", "space" or "aether" – are described as containing all knowledge of human experience and all experiences as well as the history of the cosmos encoded or written in the very aether or fabric of all existence. The records or The Book of Life in the Bible (Psalm 69:28, Philippians 4:3, Revelation 3:5, 13:8, 17:8, 20:12, 20:15 and Revelation 21:27) are described as being in a non-physical plane described as a library; other analogies commonly found in discourse on the subject include a "universal supercomputer" and the "Mind of God". People who describe the records assert that they are constantly updated automatically, and that they can be accessed through astral projection or under deep hypnosis. The concept was popularized in the theosophy, a 19th century occult Victorian orientalism movement founded by Madame H. P. Blavatsky, writer of several books. According to the doctrine, there is no end to all things - merely a convergence or return to a light body of consciousness.
More information: http://en.wikipedia.org/wiki/Akashic_records