KT2 I need help getting things to work...

http://www.fabiszewski.net/ - On this site, I've tried Gargoyle(Interactive Fiction), Chess, and maybe a calculator. None of them work, except leafpad and skipstone.

Here's the chess and calculator log:

./eboard: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory

Here's the calculator one:

Traceback (most recent call last):
File "/mnt/us/extensions/python/demos/calc.py", line 6, in <module>
import gtk
File "/mnt/us/extensions/python/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py", line 40, in <module>
from gtk import _gtk
ImportError: libpng12.so.0: cannot open shared object file: No such file or directory

Can someone help me?