Free torrent for Zoo Tycoon 2 Expansion packs?

I know there's atleast 4 or 5, but I can't find a torrent for any of them that's cracked or doesn't need a cd. I already managed to find the base Zoo Tycoon 2, so I can play that without a cd, but I'm so used to it now that I want something new added, and I've never tried the expansion packs. Anyone have a torrent to download the full versions?
 
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