Better than others I have seen

I am using this now to edit tags for a 400 GB library of high resolution (16- and 24-bit AIFF and FLAC) classical music on a QNAP NAS used as a UPnP server for a Naim Audio streamer. This app is a great start. The regex expression support is essential for classical music and has worked very well for me.

RaceTripper about Metadatics