Essentially you have to create a magnet link for it, so (for further reference) you take the hash (long number) and add magnet:?xt=urn:btih:"insert md5" In this case, the md5 you see on pastebin. You then go into your client, and "add torrent from link" or something along those lines... insert the magnet link you created. from there you should have an active magnet link, you need the torrent tracker that has something that matches your md5, in this case it was presumably
http://us.tracker.worldofwarcraft.com:3724/announce. From there a normal magnet link would start working... this appears to not work anymore, so whatever... but now if you ever want to know how to do this in the future, free knowledge