The path to the password's pretty well pointed out in this thread; no one's gonna be more specific than they have, because it's being treated as a knowledge barrier to prevent noobs installing pre-releas beta junk that they don't know how to deal with.

For getting just the deb, the people with Diablo make themselves pretty obvious in the Diablo threads; you might PM one of them... at least half of them are kind souls, I'd guess.