No Name

I got to the bottom of it. $ metaflac --list 02\ -\ Angelica.flac ... METADATA block #2 type: 4 (VORBIS_COMMENT) is last: false length: 233 vendor string: reference libFLAC 1.3.2 20170101 comments: 8 comment[0]: ALBUM=Eternity [Peaceville Records-Pony Canyon Inc PCCY-01050] comment[1]: TRACKNUMBER=02 comment[2]: TRACKTOTAL=15 comment[3]: ARTIST=Anathema comment[4]: PERFORMER=Anathema comment[5]: GENRE=Doom Metal comment[6]: DATE=1996 comment[7]: TITLE=Angelica This shows that the correct tag is TRACKNUMBER,...

Players don't recognise TRACK (uppercase)