The neurospy project is now mostly abandoned for lack of funding and general interest in its further development.
If you are interested in resurrecting this project, and have serious purpose and financial backing, please contact <dvucinic@users.sourceforge.net> for advice.

If you wish to check out the last known good version, first install NetBeans 6.5.1, then use the following command:
svn co https://neurospy.svn.sf.net/svnroot/neurospy/neurospy/tags/2.0 ns-wc
If you don't understand the above, you're not ready.
The last snapshot of the web site is here.