media-sound/sound-juicer-2.31.6:0::gnome requires >=gnome-extra/gnome-media-2.11.91[gtk3?] while no gnome-extra/gnome-media have this USE flag. Reproducible: Always
app-cdr/brasero[gtk3?] should be used instead of app-cdr/brasero PS. My error for original bug - paludis allows build without such flag when it is disabled.
sound@ is probably not concerned about things in gnome overlay.
Fixed in 2.32 in the tree