Local audio device not working when Nginx is running on port 80

I have a development setup on Windows 10 64bit - running Laragon, which is just a wrapper around running some services.

When I run the basic nginx web server on port 80 (default), my Roon desktop app stops finding Audio devices - I’m guessing RAAT service is using that port. Since port 80 is standard for web development, how can I configure Roon / RAAT to still show audio devices - on another port, via a parameter / setting?