Fourth quarter sales at Books-A-Million fell 6 percent on a same-store basis and 4.6 percent overall at $157 million, but net income of $11.9 million was up more than 6 percent. For the full year sales of $509 million were down 1.3 percent, declining 3.8 on a same-store basis, and net income rose to $13.8 million. The board authorized another stock repurchasing program of up $5 million.