Comment 11 for bug 1732807

I think the tag_whitelist - and therefore the tags stored in our "sound_file" objects - is only important for constructing the path based on a pattern like {artist}. Tags are copied in gstreamer and we don't have control over that.

Please check if the Year tag is missing using ffprobe. I had cases of m4a tags not being displayed in various tools. That may help to further narrow down the problem.

And maybe we should use some sort of tag library to copy tags instead. Like mutagen. Unfortunately mutagen was the package for tag reading in those tools that didn't display my m4a tags...