When using ESPhome or SlimProto Player to play a media file over a speaker (in my case, Muse Luxe), what actually happens is HomeAssistant sends an URL and the media player then back connects to HA with an URL.
Sadly this URL seems to be the same as the URL that’s used access HA (e.g., https://homeassistant.intra.mydomain.net:8123/ ). But this can be problematic or break things at all: In some configurations, no DNS exist that would resolve that URL and most likely, we do NOT want to use SSL for such streaming.
The desired solution would be something like the “base_url”, for example:
media_player:
base_url: http://192.168.123.10:8123/