My guess is it was taken from here:
http://www.nicovideo.jp/watch/sm22397752
the video was uploaded on December 6th, and nextday edited the tracklist the same day, but omitted the "SEGMENT" piece for some reason.
The first 5 tracks (or parts of one "epic", so to speak) were already released on CD
before, and the total length is curiously 30+ seconds longer than than it is on the C85 version (assuming the Nicovideo description is correct). Whether the "SEGMENT" piece is exclusive to digital release or not might remain unknown for now.