BlackHole - A virtual audio driver that routes audio between apps

Learned about this tool recently, for people who want (the now deprecated) Soundflower for Catalina. Installation was quite straightforward, testing it to see if it's a viable substitute to paid tools like the ones from Rogue Amoeba.

Fantastic. Tested and working for me, for all use cases. This is a free alternative to SoundSource by Rogue Amoeba. Good documentation too. Thanks Existential Audio!