Hey, I'm a Mac user and I only just decided to get foobar but I'm not really great with this sort of thing. I downloaded a Discord Rich Presence component, but when I open my foobar preferences, there's nothing about components. I also tried opening the file and setting the application to open said file as foobar, but when I did so it told me that it wasn't the right kind of "audio file".
Components exist only for foobar2000 on Windows. It is not possible currently to use components in foobar2000 on Mac.
And while the Windows version does work with components under CrossOver or other Wine distributions, I doubt that anything like a Discord Rich Presence component would function there.