Folder thumbnail also applied to content

[frenksisco]

Hi! It's hard for me in English but I try ...
I'm trying this media server for the first time and I love it ... really.
I just have a problem with file thumbnails.
When a folder contains a folder.jpg all files in this folder show that as thumbnail instead of their own.
I do not want to delete those folder.jpg, are useful.
Is it possible to let files showing their thumbnail even if folder.jpg is present inside the folder?
thank you so much

[frenksisco]

Any idea?