Customising files

[Alice]

Hi All,
I've recently replaced XP with Windows 7 and I'm having trouble customising my music files. In XP had all the album covers displayed as icons but in Windows 7 lots of them aren't showing, although some are fine! Right clicking on the file and going to 'properties' and 'customise' there is an option under 'folder pictures' to choose a file to display. When I choose a picture file and click on 'OK' the icon either stays as it is or changes to a folder icon without the picture. Any advice most welcome. Thank You.

[AlBags]

In XP .. you r click on a folder inside My Pictures, select properties and customise .. set the dropdown to .. say .. Photo Album, then tick the box below to apply to sub-folders too.
I don't use W7 .. do you have similar option?
Maybe there is a limit to pixel size? Try a small jpg in the folder too, marked "folder thumb"