They did renumber and retag them into a single album. If these had been given out as individual album downloads (like the Game Music Bundle), I would've just added a note to the individual entries saying that they were given away like that.
Check this out, an album from their second Kickstarter project to fund the Rokko Chan soundtrack:
http://nubuwo.bandcamp.com/album/originary-pack
There's like four or five albums combined into a single one. I also just noticed some track seem to have their own extensive liner notes... ugh...