I'll have to specify [include mask, defaults to *.*] include=*.mp3 *.jpeg *.bmp and so on ... in your program.
It doesn't support multiply include masks (and exclude masks) at moment.
I use it for neatly organized stuff so this wasn't priority.
btw there is also hardcoded exclusion for *.!ut files (torrent temps).
Oh, just realized that it is possible to simulate multiply include masks by scanning folder few times - few [scanX] sections with same folder and different "include=" shoud work.
May need to implement masks properly, depends on how soon we may get native HFS support for RSS.