>I recorded 24 hours of the audio and still have the tape somewhere??? in the basement, but alas, the tape recorder is long gone.

The tape probably wouldn't be viewable anyway. Magnetic media degrade to the point that they become unusable. Estimates vary but I haven't seen any as high as 43 years.

http://www.clir.org/pubs/reports/pub54/4life_expectancy.html