create a new folder at examples/Alphabet/sounds/De with the German sounds from the Kletters Project (see above) Ad the attached code at examples/Alphabet/find_letters/ As I cannot test the code, please tell me, if it works.
The letter sounds, you use are from the kletters project. There are the sound sounds as well, e.g. for German: https://invent.kde.org/education/klettres/-/tree/master/sounds/de/alpha
Translation
French translation (Patch)
a button to switch the sound on and off would be a good idea. for beginners it is helpful, if the computer tells the sound (phonic) of the letter (or a button with 3 positions: silence, phonic (e.g. "K"), letter name [e.g. /ˈkeɪ/])
You could simply clone the game and re-sound the new/additional version with the sounds of the letters . e.g. "F" instead of "/ˈɛf/" or "k" instead of " /ˈkeɪ/".
New European Country game
Add sounds of letters