Hi,
The image file which shows the issue:
It is the informative screen message, telling me which track I am listening to on a radio channel, in this case the French radio channel, “BFC Classique”. As you can see, “Marquise de Sévigné” becomes “Marquise de Sňvignň”, so Volumio seemingly cannot decode the ‘é’ character correctly. Of course, it could also be an issue with the way the radio channel encodes its message? The ‘â’ in “Château” is also wrong.