EXS 24 Logic Sampler Users Group

Hi,
  
 I've downloaded some free soundfonts from Hammersound.net.How do soundfonts work 
in the exs24?I placed them in my Sampler Instruments Folder and they show up in the 
exs24 menu but there is no sound and no audio file in the editor under "zone".The 
Hammersound site mentions nothing of having to download samples or wave files to work 
with these soundfonts,how do they work?


   Thanks,
  
  Jay
  
   Logic Platinum 6.3.3/OS10.3.1