gentoo-overlay/media-libs/sdl-mixer/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<herd>games</herd>
<use>
 <flag name='fluidsynth'>Use <pkg>media-sound/fluidsynth</pkg> for MIDI support</flag>
 <flag name='midi'>basic support for MIDI files</flag>
 <flag name='mod'>basic support for MOD files</flag>
 <flag name='playtools'>Install playwave and playmus tools (useful for testing)</flag>
 <flag name='smpeg'>Use <pkg>media-libs/smpeg</pkg> for MP3 support</flag>
 <flag name='wav'>support WAVE files</flag>
</use>
</pkgmetadata>