Nice radio!
There's a Spanish branch of our National Radio Network, which is Radio 3, and has two or three weekly programs including 78s. My favorite one is Melodías Pizarras, which is cast on Saturday nights, 23.00 to 01.00 local time (CEST). There are others, but I've not yet investigated them in detail.
Melodías Pizarras has this podcast, commented in Spanish, but the 78s played are there for all the more than 500 programs cast since 2018:
https://www.rtve.es/alacarta/audios/mel ... mmp8BYwB2E
They also have a blog
https://blog.rtve.es/melodiaspizarras/
They play many Spanish 78s, and international 78s, South American, etc, but also many US 78s of dance music, western swing, country and blues, etc. I find it que funny and interesting.
The link in radio garden to listen live is this
http://radio.garden/listen/rne-radio-3/jSuIufls