Adding to jamesster's post, you can find most of the audio dramas in this YouTube playlist (although unless you speak German, they won't do much but provide something to read along to).
It will never cease to amaze me how far LEGO developed so many projects that ultimately never came to anything. A film, a television series, and a video game? And this all predates project Darwin by several years! (and brings the tally of canned LEGO TV series to 4 or 5, depending on the fate of the Adventurers one).
I hadn't realized LEGO Publishing was behind the Edward and Friends Fabuland TV show, although in retrospect it makes sense. I assumed the company petered out after the poor performance of Jim Spaceborn and Castle Kids.
The Trapped in Space book is fascinating. The minifigs predate the first officially produced minifigs with faces not built around the classic smile by 13 years.
All of this information on the development of both Jim Spaceborn and LEGO Publishing is wonderful to see. It's incredible that they were taking the possibility of stories with minifigs this seriously this early on. Thank you for your efforts in unearthing it all!