rereading your question...
So it looks like you find what you want to download, but can't figure out how to click the right thing to trigger your file rather than an ad? Jeez, welcome to the club! Favorite trick of these advertisers (and the torrent sites that host their ads) is to give you a button-looking advertisement that says "download now". Assholes! You just have to look around carefully, and start to get a feel for what looks like it is the control rather than the ad. Nobody gets it right all the time (such is my theory - I certainly don't get it right all the time) so be prepared for some porn to jump out at you from time to time.
