How to install 2 themes in one Buddypress site

Hi. I have installed Buddypress 1.5 on wordpress 3.3.2 . But i can not install facebuddy theme on it. Because it has two setup files. I uploaded the 2 files on themes directory. But cannot active 2 themes at a time. So they are not working. Now, what can i do for it? It’s very essential. Please give me a solution. Thankyou.
You can get/download the theme from here- https://www.tmdhosting.com/templates/free-buddypress-themes.html/download/679/download/888/download/888