sox is in the default repository (for example jammy/universe). And it will be suggested as an install if you try to run play when it's not installed.

So brew, any "killer apps" on brew for linux? What's nice to get from there?

Linuxbrew is pretty convenient for installing dependencies, especially on "stable" distributions like Debian/Ubuntu. You can install specific versions of dependencies that you want, even keep them side-by-side.

It's also distro-agnostic, so it works almost everywhere.

Looks interesting. It both says that installing without sudo is a feature, which sounds neat, and that installing into ~/.linuxbrew is an unsupported feature.

  # On Linux, it installs to /home/linuxbrew/.linuxbrew if you have sudo access
  # and ~/.linuxbrew (which is unsupported) if run interactively.
  HOMEBREW_PREFIX_DEFAULT="/home/linuxbrew/.linuxbrew"
  HOMEBREW_CACHE="${HOME}/.cache/Homebrew"