Strings.xml files are used to translate MediaPortal into various languages. They are stored in the ProgramData\language sub folder
As changes are made to the English strings_en.xml, translators should add them to the related string files in their language.
Translators may subscribe to this page and sub pages to receive notification of any changes to the English strings_en.xml file. Just select Page Notifications on the Wiki Menu ( you must be logged in and add you email address using Tools > My Preferences first)