libfaad is *required* now for most users, libmad is optional
libfaad is *required* now for most users, libmad is optional

See #271 and #276.

johnso51/pianobar,bmbove/pianobar-save,bmbove/pianobar-save,johnso51/pianobar,johndeeney/pianobar,tchajed/pianobar,bmbove/pianobar-save,DavidZemon/pianobar,tchajed/pianobar,twahlfeld/pianobar,gnowxilef/pianobar,johnso51/pianobar,johnso51/pianobar,bmbove/pianobar-save,johnso51/pianobar,johndeeney/pianobar,twahlfeld/pianobar,gnowxilef/pianobar,twahlfeld/pianobar,gnowxilef/pianobar,gnowxilef/pianobar,twahlfeld/pianobar,johndeeney/pianobar,tchajed/pianobar,DavidZemon/pianobar,DavidZemon/pianobar,twahlfeld/pianobar,twahlfeld/pianobar,gnowxilef/pianobar,tchajed/pianobar,johnso51/pianobar,tchajed/pianobar,DavidZemon/pianobar,johndeeney/pianobar,DavidZemon/pianobar,tchajed/pianobar,gnowxilef/pianobar,DavidZemon/pianobar,johndeeney/pianobar,johndeeney/pianobar,bmbove/pianobar-save