Honestly, I remember now getting this interview, but it isn't it. I looked through the whole transcript and the interviewer was not skeptical of computers, there was hardly any mention of the Dewey Decimal system etc.

Is there anything else? That one I had only audio, it a radio show I believe. And the guy was talking about music and dewey decimal system etc. Must have been 80s or 70s. It wasn't Alan Kay

This one with Ted Nelson? https://youtu.be/RVU62CQTXFI

It's got the skeptical interviewer, and at 9:56 (with some lead-in before) there is a discussion of libraries, catalogs, tagging, etc.

Edit: and then he goes on to mention Dewey Decimal as well.

Yess!! THANK YOU! For all these years, I couldn't find it. I appreciate this so much, thank you :)

Welcome :)