I started working on timbre.js successor, v13.xx.
It's almost a full rewrite, so this project page is no longer recent working.
The new project page is here: http://mohayonao.github.com/timbre.js/
CAUTION!!
The new timbre.js(v13.xx) is not compatible old timbre.js(v12.xx), but you may approve the new version, because that is truly convenient and super awesome than old.