Demilich - Nespithe CD question

There's the original, authorized press, then there was one that Demilich didn't authorize due to failed royalty payments or a contract dispute. This is why it's free for download; they don't want that label making money off the album.

One of the Demilich fanboys here can probably give you a more detailed explanation than that, but I'm pretty sure that's the general idea.
 
Originally it was released on Necropolis, but they failed to pay Demilich as far as I remember, Relapse (?) re-released it with the demo as bonus tracks but Demilich still have it for free on their website. I'm pretty sure Metal-Archives has more info.