post_install() {
  cat << _EOF
 
==> In order to play your music with gmusicbrowser, you need to install:
- gstreamer, perl-glib-object-introspection + gstreamer plugins or
- mpg321/vorbis-tools/flac123/alsa-utils or  
- mplayer or
- mpv
(look at optdepends for details)
     
_EOF
}