[Dunno]

The second screen displays a playlist name if I'm playingback from a saved playlist.
The next info is displayed on the second last line, album and artist alternate on the same line.

%ac%s%?ia<%ia|%d2>
%ac%s%?id<%id|%d1>
%ac%s%?it<%?in<%in-|>%it|%fn>

%ac(%pp|%pe)
%pb
%ac%pc | %pt %?ps<[%ps]>
%ac%pn
%ac%s%t4Al: %Id;%ac%s%t4Ar-%Ia
%acvol %pv | bat %bt