The package is severely out of date with respect to the Debian
Policy. Latest version is 4.6.2
and your package only follows
3.9.2...
The package has a debian/watch file, but the last attempt
to use it for checking for newer upstream versions failed with
an error:
In debian/watch no matching files for watch line http://code.google.com/p/lastfm-java/downloads/list .*/last.fm-bindings-(.*)\.zip debian debian/orig-tar.sh