The Power of Now – a guide to spiritual enlightenment by Eckhart Tolle is in the Public Domain, I just learned, and not just the audio version as I have written here earlier, the text-version is also available. (Thanks to the kind folks at the Archive.org) I will try to find his other books and present them here soon, sign up for the newsletter and get notified when they are here.
Unfortunately, I have been asked to remove this book, by the rights-holders: http://www.newworldlibrary.com/. I had it posted here because I believed it was in the public domain since it could be found at sites I usually trust.
I hope you will find something else that will suit your here on the site. You can buy The Power of Now here:
The Power of Now: A Guide to Spiritual Enlightenment