Allow bliss to delete folders that contain non-audio files

When bliss moves audio-files according to the rules, sometimes files get left-over in the old folder.
These can be thumb.db or other artwork.
I'd like to allow bliss to delete folders that contain only specified files, in my case: *.tmp; desktop.ini; Thumbs.db; cover.jpg

I'm currently using "Empty Directory Remover" every so often.

The contrary idea to this is this one:
http://ideas.blisshq.com/forums/21939-bliss/suggestions/32117689-take-non-audio-files-to-the-new-directory-when-ren

I'd be okay with whatever is easier to implement. :)