Fall back to other cover art images if none match name filters
Many users music libraries are made of some nicely named albums with covers and booklet scans and some messy albums with a single non-standard named image file.
In this scenario Audacious would correctly find the cover art from the nicely named files but wouldn't find anything in more messy folders (where the image files don't match the cover image retrieve Include list). Removing all the words from the Include list would solve the problem with the messy albums but will probably make Audacious choose the wrong cover art file from the nice folders containing more than one single image file.
I think it would be useful to have an option like 'Search other images if searching these words did not produce results', in order to give the user the choice to use the Include list as a list of preferred words to give priority to, instead of completely excluding all the non-matching filenames.
Maybe it could also be a good idea to make this the standard behaviour.