Strut Records includes this download for the audio documentary that used to be part of the "Nigeria
70" compilation deluxe edition:
http://www.strut-records.com/n70audiodocumentary/
(right-click this link to download a ZIP archive with audio MP3 files)
The 2CD "Nigeria 70" compilation is definitely worth owning:
http://www.amazon.com/Nigeria-70/dp/B001QSN7LO/tomslinx
The audio documentary is interesting in and of itself.
-- Tom Fine