Although we deal largely here in the works of Hergé and Tintin in English rather than French, I have to point out an absolute gold-mine of Tintin-themed audio programming, available from France Culture via their website on a "catch-up" basis.
Inspired it would seem by the launch of the two-volume La Malédiction de Rascar Capac
("The Curse of Rascar Capac") set, collections of the original French-language serialized strip versions of Seven Crystal Balls
and Prisoners of the Sun
, they have devoted this weekend and next to two long Tintin specials, combining interview material with the complete runs of archive radio-serial versions of the two stories, which date from 1959.
The wealth of material (which isn't limited to the Inca stories) and the quality of the contributors, together with a fairly jolly radio-drama (which is fairly easy to follow if you are familiar with the books, but worried about the quality of your French!), makes this worth a look (or rather listen)!
The programme guide to this week's Part 1, with links to the audio files, can be found here
. Links working at time of writing, but may expire at any time - I don't know the France Culture policy for making things available.
The schedule for next weekend's similar extravaganza can be read here
. No links, as the programmes have not been broadcast yet!