In its current state, it searches the given web page for links to mp3 files and downloads them to the current directory.
Because for some reason I wanted to download all the mp3 files from this website: http://www.planecrashinfo.com/lastwords.htm (TRIGGER WARNING: AIRPLANE CRASHES)
I have no idea, you'd probably be better off building your own sort of thing from scratch in your language of choice. It can be easily modified though to download any filetype you want, perhaps by accepting a list of formats as an argument (maybe I'll do this later...)