The players' pictures sit on the right in even lines of at most four, each
ending at the row's right edge, so five pictures are 3 + 2 and seven 4 + 3.
The text takes the room they leave and wraps only when it does not fit, and
the row is as tall as the taller of the two, instead of a width fixed by
the number of pictures.
Rows are rounded and alternate like the other lists, are highlighted under
the mouse, and the playing song has an orange edge. Clicking a picture
clicks its song.
main/ holds the main window and top bar, quiz/ the quiz and its parts,
player/ the music player, popups/ every popup and what they share, data/ the
songs, players, playlist and settings, server/ the MusicServer client,
common/ the list row and GameLog, and themes/ the themes and style boxes.
Sansan