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NPR posted a story about playing music together online: https://www.npr.org/2020/07/14/891091995/playing-music-together-online-is-not-as-simple-as-it-seems
In the story they mention using JackTrip that was developed partially by a professor at UC-Irvine.
Here is the link: https://ccrma.stanford.edu/software/jacktrip/
Hopefully someone with some free time can test it out and report back on how it goes.
Best of luck!