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.
