If I didn't have a Blusound Node, I'd do a Raspberry Pi.
https://www.youtube.com/watch?v=2fX7NSaAKYU&ab_channel=TheHansBeekhuyzenChannel
https://darko.audio/2020/01/raspberry-pi-audio-streaming-101/
https://www.youtube.com/watch?v=2fX7NSaAKYU&ab_channel=TheHansBeekhuyzenChannel
https://darko.audio/2020/01/raspberry-pi-audio-streaming-101/