The tsi.src is one part of libtabe. You can obtain it from the latest libtabe version from the ftp site:
after downloading the tarball and untared it, you can find the tsi.src in the "libtabe/tsi-src/" directory. For convinence, all the working files mentioned in this web page could be found in In that directory, the sub-directory orig contains the original tsi.src from libtabe-0.1.X series; while the newest under-development version of tsi.src is available in the libtabe package in the CVS server. There are 3 scripts