When browsing for a multi-artist album I might want to select one of the artist
I know is in that album, then narrow down the album list to the compilation
album I want, then unselect the artist so the entire album's songs become playable.

Similarly an artist might have albums and songs categorized into various genres,
and I should be able to select one of the genres, select the artist, then undo
the genre selection without resetting the highlight on the artist.

Just some iTunes-ism I miss since selling my Powerbook, but I think it would
make Rhythmbox much more usable.

Thanks,

Michel