gentoo ~ # emerge -p bmpx

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild  N    ] media-libs/gst-plugins-good-0.10.3  USE="-debug" 
[ebuild  NS   ] media-plugins/gst-plugins-vorbis-0.10.9  
[ebuild  N    ] dev-libs/libsigc++-2.0.17  USE="-debug -doc -test" 
[ebuild  N    ] dev-cpp/glibmm-2.8.4  USE="-debug -doc" 
[ebuild  N    ] dev-cpp/gtkmm-2.8.3  USE="-debug" 
[ebuild  NS   ] media-plugins/gst-plugins-ogg-0.10.9  
[ebuild  N    ] media-plugins/gst-plugins-ffmpeg-0.10.1-r1  
[ebuild  N    ] dev-cpp/libglademm-2.6.2  USE="-debug" 
[ebuild     UD] net-misc/neon-0.25.5 [0.26.1] 
[ebuild  NS   ] media-plugins/gst-plugins-mad-0.10.3  
[ebuild  N    ] media-sound/bmpx-0.20.2  USE="alsa ffmpeg mad nls ogg vorbis -aac -cdparanoia -debug -flac -hal -libnotify -musepack -oss -sid -stream -theora"