Karl did a track-by-track commentary for Edgeland, talking about the meaning or origins for each track. About 22 minutes in total. It's available exclusively on Spotify:
http://open.spotify.com/album/2d5Q9NishDND3xO1woxrbq
However, some of you might not have access to Spotify, and I believe it's also region-restricted to the UK, so I've recorded the commentary and put it up for download here:
http://www.mediafire.com/download.php?jex50ccluec7udt