Hi Damian,
I'm not sure that remix was released anywhere. The author has posted it for public download (
here), but the link has expired and is no more available. You could try contacting him or the guy who uploaded the youtube videos.
If you want to buy the original version of the track:
http://www.junodownload.com/products/in-search-of-sunrise-1-unmixed-tracks/1563312-02/?trackid=10