Ensure your system has the dependencies listed in debian/control, then compile by running ant.

Then run using,

java -jar ./dist/osmTileListFromGeometry.jar -o 01-tileList.txt
java -jar ./dist/metaTile.jar -i 01-tileList.txt -o 02-metaTileList.txt

You need an osm2pgsql database running for the first command. You can specify the connection details as program arguments. Run with --help for details.

This tile list can then be parsed to https://gist.github.com/1397377 to render the tiles to disk.