The DUO2 has a VFD (governed by a skin via 'frontpanel display') and an LCD (that is governed by L4L). To prevent misunderstandings I changed the title of the thread from "Is movie cover/info possible on VFD LCD Duo2?" to "Is movie cover/info possible on LCD Duo2?".

When you go to the web-IF --> L4L --> Media you see the 'show cover' thick box. Did you try that?