Plupload site explains how to translate plupload lib (http://www.plupload.com/punbb/viewtopic.php?pid=3949)
1) create an internationalization i18n js file (or grab an already existing one)
2) place it with all plupload js files under /js folder
3) into the caller html file, declare this i18n file just after the plupload.js declararation
Is this procedure still possible in Drupal ?
Which file must be changed to load the the translation file ?