Question about Lunii Flam - Baladeur Audio Interactif (Fr)

No, not yet. I've bought new stories.

The Lunii website states: "The audio books in the 3-7 years catalogue will be compatible with FLAM. This backwards compatibility will be introduced at the beginning of 2024 and will be phased in across the entire catalogue, as it requires a great deal of in-house development work. However, it will not be possible to listen to audio books from the FLAM 7-11 catalogue on Ma Fabrique à Histoires."

Now yes

Yes, via your Lunii account and the smartphone app.
Done so this 24 December. Works tiptop