This post can now be found on MarksInTheSand.com.
John Maxwell is an author and speaker and pastor who has written over 50 books, primarily on leadership.
The following websites appear to host free MP3s of his material:
You can also download MP4 videos here:
There are more videos here, some of which are for online viewing only:
If anyone has any more links, please let me know and I will add them.