Afaik FLAC this days uses an ogg container, which is where the metadata goes, so support should be as good as for Ogg Vorbis. In practical terms, I have a huge

Afaik FLAC this days uses an ogg container, which is where the metadata goes, so support should be as good as for Ogg Vorbis. In practical terms, I have a huge collection of FLAC, and never had trouble with metadata, sounds like a bug in whatever player you were using.