From the FB2K components repository https://www.foobar2000.org/components (https://www.foobar2000.org/components), click on the title of a component and it takes you to a page for that component with download and documentation links etc.
The "discussion" link is formatted:
...and results in a 404 error if clicked. The links should be:
I guess the links were invalidated by an update to the forum software.
Just taken a quick sample, and find some discussion links are the working format and others are not. Yeah, sure, now I know about it I can work around it by editing the link in-browser, but isn't an admin going to take an interest and fix it for everyone?