Select all of the files in your drawer by using the keyboard combination “Apple key + A” (⌘A).
For the sake of this tutorial we’ll be tagging all of the files that comprise one album. Select them all and then “drag and drop” them directly into the Files Drawer. Open a Finder window and locate the FLAC files that you want to tag.Unlike other cross-platform or open-source tag editors, Meta’s feature set is focused on one area – editing. Meta is exactly what I was looking for: the app is a modern Mac utility that supports all popular audio formats (from standard MP3 and MP4 to FLAC, DSF, and AIFF) and can write metadata formats such as ID3v1, ID3v2, MP4, and APE tags.