New Features

I will like to have some more tools in the program.
1 - A Mp3 integrity check (verify file standards and try to correct simple problems... automatic if selected and possible)
I hate when some player stop, complaining about a file.
2 - Some tools to deal with Replay Gain.
I hear some controversial opinions about Replay Gain, but the player don't need to use it.
Thanks.

:astonished:

All these features are already available, yet not in MP3tag. MP3tag is a tagger. It deals with the tags. It does not deal with the pictures or the audio stream. So I doubt very much that you will find the requested features in mp3tag soon.
For your purpose try mp3val or mp3diags.

See there ...
http://www.foobar2000.org

DD.20150125.1205.CET