How to Change User Interface Language? Zortam Mp3 Media Studio › Forums › Zortam Mp3 Media Studio Forum › How to Change User Interface Language? This topic is empty. Viewing 0 reply threads Author Posts January 2, 2015 at 12:00 AM #525 Zortam SupportKeymaster How can I change the GUI-Language when the application already is installed? I have 2 users on the PC, one prefer english and the other german. Regads Mark Author Posts Viewing 0 reply threads You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In