Hi,
When you publish your site through Publii, you can choose to set it up through Netlify and use the Redirect file to solve this problem. I ran into the same problem and wanted to redirect visitors who visit kressonbiblechurch.org/podcast to anchor.fm/kressonbiblechurch Hope this helps!
Source: https://docs.netlify.com/routing/redirects/#syntax-for-the-redirects-file
Thank you,
Nick