File is 2.6Gigs (I got it in 3 hours at an amazing 330kbytes/sec, those of us who once downloaded things on oldschool BBS's know why I think it's amazing).
As far as I know, the only place the file it currently hosted is FilePlanet. In theory you could get it from someone who downloaded it from there.
Blizzard has said that they will be hosting the file when open beta starts, as will FilePlanet. From everything I've read (and i might be wrong) Blizzard is not hosting the files at this moment.