Trouble with ttslib install

Hi guys I feel horrible asking because it shouldnt be this difficult for me, but I cannot for the life of me get the ttslib to show up in my lib in sketch, plz offer me assistance, I am trying to recreate the talking xmas tree http://www.instructables.com/id/Animatronic-Talking-Christmas-Tree/?ALLSTEPS, and maybe I am just not understanding how to install the library.

Thanks again the support from arduino is always amazing