What do I download?

[seamusdemora]

There are two items listed in "releases"... I'm guessing that for my Raspberry Pi I need pw-volume-aarch64... but what do I do with this file? Is it an archive - an executable...?

If I need to build from source, are there any instructions for that?

[monomere]

It's an executable.

To build the project you need rust (then just clone the repository and do cargo build --release inside; the compiled binary should be in target/release/pw-volume)

There's a disclaimer in the README now that suggests using WirePlumber instead :-)