i've been playing around with the new (to me) foobar2000 0.9.5.2. i really like the facets plugin.

my no album art:

the configs for each of my tag/replaygain columns:
$if(%artist%,A, )
$if(%album%,Al, )
$if(%title%,T, )
$if(%genre%,G, )
$if(%tracknumber%,#, )
$if(%totaltracks%,##, )
$if(%replaygain_track_gain%,♪, )
$if(%replaygain_album_gain%,♫, )
and if anyone is interested, the colors i use:
text: 192,192,192
background: 20,20,20
selection: 60,60,60
highlight: 4,94,202
the font is calibri 9 pt.