so.0-Files

What are so.0 files? A program I'm trying to install says it needs many of these, like: RESULT=$? error: failed dependencies: libatk-1.0.so.0 is needed by xdx-0.2-1 libgdk-x11-2.0.so.0 is needed by xdx-0.2-1 libgdk_pixbuf-2.0.so.0 is needed by xdx-0.2-1 libglib-2.0.so.0 is needed by xdx-0.2-1 libgmodule-2.0.so.0 is needed by xdx-0.2-1 libgobject-2.0.so.0 is needed by xdx-0.2-1 libgtk-x11-2.0.so.0 is needed by xdx-0.2-1 libpango-1.0.so.0 is needed by xdx-0.2-1 libpangox-1.0.so.0 is needed by xdx-0.2-1 libpangoxft-1.0.so.0 is needed by xdx-0.2-1 Couldn't find them in the SuSE installer, so I'm wondering what these files are and how I'm going to get them. Mark