I’m glad to hear that Isaac Asimov’s original Foundation trilogy is finally being filmed as ten-episode series. Although sadly it’s not being made for the cinema by the Independence Day director, as was mooted about a decade ago. It’s being made for TV in Ireland by Skydance for Apple Studios, by the director of the recent Ghost In The Shell. Filming reportedly starts next month, for a wrap-up in June 2020 and a screening in perhaps Fall 2020 or early in 2021.
I assume it’s the original trilogy (Foundation, Foundation and Empire, Second Foundation). Not the non-Asimov prequels now also available, or Asimov’s own sequel novels.
If you can’t wait, there’s a pre-PC 1973 Foundation Trilogy radio adaptation by BBC Radio on Archive.org, which runs eight hours. Sound design by the famous Radiophonic Workshop. There’s also another copy here.
The freeware AIMP Player and its “Headphones” preset is what you want to listen to this. Presumably it emulates more closely radio speakers, as in the original audio broadcast, dampening the sharp electronic music enough to make it listenable.