'Found this add-on, which may not be what you were looking for, but it's worth a try : https://addons.mozilla.org/en-US/firefox/addon/rename-tab-title/

Seperate issue : Your system details show that you need to update your Adobe Flash Player - you're running an old version, which can cause problems. Would you please uninstall your current version and install the latest version, which is '''30.0.0.134''' Uninstaller : https://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html https://get.adobe.com/flashplayer/ Note : some 'extras' may be offered in the download.