I’ve found a metadata source for OUI FM and connected it to Roon: Roon Exclusive: Live Radio metadata for 90+ stations incl. BBC, Radio France, FLAC radios and more - #23 by alec_eiffel
If you have a streaming service enabled, Roon will automagically identify artist and track on the Now Playing screen, with clickable links.
Do you also need metadata with the other OUI FM stations?