One solution is to get a video capture card/device for a computer and then burn a DVD/CD or save it to a hard drive.
I assume you have a working device to play back these old formats anyway.
Something like this would work:
https://www.memoryexpress.com/Products/MX61334
And if it is just audio most computers already have an audio input or microphone input and you can connect something like this to that port and record the audio:
https://www.amazon.ca/3-5mm-Female-S...JDTJDMR4SDVKYS