as i said before, i don't seem to have that problem. all the filenames are showing for all the folders.
i don't think the filename setting could have anything to do with it honestly. when i make a setting, i associate that only to the xml's that are affected. in this case, the only xml i used was sheet mode so the music thumbs and the filenames of every other view will not be affected by this change.
if you are in sheet mode and you have 2 folders, say movies and tv, and you have the filename turned off, these 2 folders will lose their filenames also. there isn't any way for me to separate that according to what folder level you are on. my suggestion would be to just make a moviesheet for these folders also. maybe one with just some random covers and the title "Movies" at the top, just like the glass sheet template.
yes, i think that's how you can change the background. if you're unsure about a reboot, just go ahead and do it.