Just a very belated note to thank Florian for adding WAV support! I requested this back in 2008 Plea for WAV support soon after which my project ceased and I didn't use Mp3Tag again. Then I gor a forum notification of Florian's Plea for WAV support - #36 by Florian saying that he added it in 2016. I pledged 50e at the time, so I have now made that donation.
Though I don't use Mptag these days, since the work that needed it is finished, I still remember what a delight it was to use, turning a huge music library tagging job from nightmare to joy. Thanks again Florian for all your work and responsiveness to requests. I wish you and Mp3tag all the best for the future!
Chris