If you could build it in 2024 what would you do differently and what would you keep the same?
Another big change since 2020 is the Music Modernization Act (MMA) which started to actually move (quite old) music recordings into the public domain. This adds significantly more audio to our collective crate of free sounds (I actually added a bunch more audio to Citizen DJ since my residency ended: https://citizen-dj.labs.loc.gov/public-domain-2022/ ). Given the leaps in easier-to-use ML tooling in the past few years, I could probably do a lot more around discovery and visualization of large amounts of audio.