Now I have searched far and wide for this, but the search strings just bring up the wrong thing.
All I want is an addon/plugin/whatever, or perhaps a menu option that I have missed, to portray an iTunes-esque icon next to the song to indicate it is being played.
Such as this:
See the lil' blue thing to the left of the highlighted song.
Apologies if I was just too quick in abandoning search.