If you choose to pay the recommended price of $5 then it's all yours, but before clicking on the $0 price you will be forced to deal with this message:
I'm not concerned about that[supporting the artist]. I just want the music.
Personally, I haven't pre-ordered yet (catholic school guilt still rears it's head), but you can at that there link.
Either way it should be interesting to hear Mr. Williams working with Mr. Reznor.
Here's a video of Coldcut's "Mr. Nichols", it features said Mr. Williams.