Here's an archive of
most Quakecast episodes (the modern era show, not the one from the 90s). I am currently missing episodes 7 and 14. If you have them, please reach out. Episodes 54 and 60 had to be edited to the 128MB max file size on Quaketastic. Those are only missing the introductions and thank yous. So you are not missing any important bits from the interviews.
https://www.quaketastic.com/index.php?dir=files/misc/quakecast/