AudioDB extension to support audio-content based searching in Greenstone. Notes: 1. Developed primaril for Unix. Can operate under Windows with a bit of Cygwin support -- compile FFTExtract and AudioDB using cygwin -- => Need to compile gs2build with ./configure ... in cygwin also -- source gs3-setup.sh -- cmd -- gs3-setup.bat -- ant start 2. Need to set up symlink: ln -s setup.bash gs3-setup.sh as cascade-make currently looks for the former. A better fix would be to update cascade-make to look for both types of file