Can a line in be added to the raspberry pi and enabled throu

I’ve been restoring a console and while most of it’s use related to volumio will be listening to flac backups I’ve made, I can’t resist the urge to get one of my Chromecast audios to work with it. When we have company over it’s nice to just let people connect to our WiFi and cast a playlist they’ve made.

Any way around this? I appears a casting plugin is a lost cause, so I figured this might work as a loophole[size=1]word counter VidMate Mobdro