Hi - Facebook has phased out the use of the Adobe Flash NPAPI plugin months ago; to view FB vids you need a HTML5/MSE capable browser; please refer to post #1 of this thread and review the section "Q: Can't play H264 clips?" Please also make sure that you have enabled "MSE" and "MSE for MP4 video" inside New Moon's Options/Content/Video... Default language for New Moon 27.6.0a1 is en-US; head over to localization releases, you should pick your corresponding language pack (it?) from the latest release 27.6.0_RC2; just click "it.xpi" and allow the installation to take place; then open about:config?filter=useragent.locale in a tab and modify the value from "en-US" to "it"; finally, restart NM and once it loads the GUI should be in Italian!