As I know, %_md5audio% is the md5 hash of the audio part of the files, so %_md5audio% should be identical before and after removing or editing the tag infos, but it's not. Did I missed something? Is there a way to read the built-in hash info of a flac file?
At the moment %_md5audio% only returns valid audio hashes of files which have tag formats at the beginning or end of the audio file.
Since this is obviously not very helpful for, e.g., FLAC files I've added improvement of this feature to my internal wish list.