Linksheets work “as is” on Official Firmware … you can’t change the behaviour unless you use Custom Firmware
With KAD79’s Firmware Running off a USB Stick, Linksheets are no longer in the Theme Folder
they reside next to your media files.
http://forum.wdlxtv.com/viewtopic.php?f=66&t=8707&start=0
eg. on CFW they are named _sheet.jpg eg.
Tomorrowland.mkv
Tomorrowland.jpg
Tomorrowland.xml
Tomorrowland.mkv_sheet.jpg
From memory, my 1st impression was they displayed a lot faster … compared to the old method in the theme folder
but that was a while ago … i’m using a Raspberry Pi 2 with Kodi now, that automatically does moviesheets for me 
