There is a 1.15.2 fork , can you check it out and update the master . thanks

https://github.com/AfterRebelion/Sound-Physics

I've been keeping an eye out for this fork for quite a while now but it's not finished yet, he ported most of the actual mod but not the coremod part yet so it's not fully functional. But when it will be, i'll probably merge it into master.

He has a working 1.15.2 . I have been testing for about 10 days

I ported Sound Physics to 1.15.2 myself, and it's fully featured. The only thing missing is the config gui but you can edit the config in the file. Here's a precompiled jar. I'll maybe put it in a release but probably not for now.

He has a working 1.15.2 . I have been testing for about 10 days

How do I go about installing and running this 1.15.2 mod? I assume this is the download link, but I'm not sure what to do with the source code.

First working 1.15.2 release Sound-Physics-1.0.8-1.15.2.jar.zip

Lots of things missing, but fun to try anyway.
Based on secret secret

You would need to clone his GIT and pull the forge branch , then compile it , for anyone interested . Alternately get the build above and test and report whats missing .