Oh, maybe a few words about installation are in order.

To compile and link the 'xbibfile' executable, you will need a C compiler and
libraries, together with a GTK version 2.0 or greater graphics library.
Basically one executable will be generated that can be stored where ever you
desire.  Because there are a number of sources files involved, a 'Makefile' is
provided.  Thus on a Unix or Linux system:
  make
  ./xbibfile &
and you are away.