You need the following dependencies:
Python  http://www.python.org/      >= version 2.4
PyGTK   http://pygtk.org/
mp3val  http://mp3val.sf.net/

On a Debian GNU/Linux system, you can satisfy these dependencies by running
  apt-get install python-glade2 mp3val

To run mp3val GUI, execute "mp3valgui.py" with python.

WINDOWS users:
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1. Install Python version 2.4 or higher
     http://www.python.org/download/releases/
2. Install PyGTK
     http://pygtk.org/downloads.html
3. Install mp3val
     http://mp3val.sf.net/
4. Copy the mp3val.exe file into the mp3valgui directory
5. Rename mp3valgui.py to mp3valgui.pyw  (optional)
6. Provider a better installation instructions; I don't have Windows
