WAV file tagging...

[Peter@57m]

I used MediaMonkey to tag WAV files successfully for several years. I was using WAV with Sonos and an iPod Classic. The classic sounded much better with WAV files.
Then used WAV happily with Twonky and Kinsky with my KDSM.
However, I wanted to use MinimServer and Lumin. MinimServer does not support tagged WAV files at all so I converted all my music to Flac.
I did do comparisons of Twonky/WAV and MinimServer/Flag transcoded to WAV on the KDSM and could not hear any difference.
As WAV and Flac as both lossless formats you should be able to convert one to the other with no data loss.
I now do on the fly transcoding via MediaMonkey of Flac to 320 bps mp3 when syncing the iPod as I now only use it with earphones and not as a source through a DAC as I once did.
So I now have only one copy of my music files but have them served up in different formats for different renderers. I guess you want the same but to keep your music as WAV. Due to the "non standard" way that WAV gets tagged it could be tricky.
I don't know of a program that will do what you want based on WAV files.