Mac torrent failing to mount...

[Clockworkkeff]

I've been wanting to play this game for awhile, so I downloaded a torrent system to download it on my mac... But the torrent won't open. It's failed to mount, apparently.
Help? "OTL
Warning: I don't know a lot about computers.

[A Humbled Fan]

Here's a DDL mirror that I used. I'm not a huge torrent fan personally, and I know this works:

http://naodesu.org/files/katawa-shoujo/