I am on the to record all my CD to the NAS in the flac format. The Tag-Editor works fine with
"Ablum-Interpret" Cover, etc. but Groove do not recogrize the "Interpret" and notice them as
"Unbekannter Künstler"...
The fields are called ALBUMARTIST and ARTIST in MP3tag and then mapped to the corresponding fields for Vorbis comments.
If you define your own fields like ALBUM-INTERPRET, you have to define your own mapping.