Yes, did a disconnect/reconnect on the Roku SB. In fact, rebooted it.
I also confirmed that the actual filename is radio.url by going to a dos prompt and doing a “dir”
The m3u file shows up on firefly’s playlist.html, but it says it contains 0 entries. Same thing if I create a dynamic playlist where type contains url.
The url file and m3u file are in the same folder, both in my scan path.