Since you want this to be as widely spread as possible with the underlying concept attached to it, you might want to get in touch with PirateBay (and similar). They seem to like this kind of stuff and might give it front-page attention.
It will inevitably become an illegal* torrent sooner rather than later, but you might appeal to the group that thinks the current model of making money off of media is far from optimal.
* illegal: I might be a bit thick, but am I getting the rights to distribute (fileshare) this after I have bought the DVD-R, or can anyone do it? Filesharing today generally means torrent, which means that everyone downloading the torrent is also sharing it... I guess my question here is: I can share it, but can anyone legally download it from me?
I find the concept intriguing and I'm really looking forward to what other people here will say. Will keep an eye on where you're going from here!
PS. Not that I ever use PirateBay, of course.