Replace spotify

Hi Selfhosted,

I'm looking for the best recommendation to replace spotify for music on the go and at home.

Currently at home I use moOde for multiroom audio and spotify connect to play music, my wife also casts to it using airplay. I then just use the spotify app on android when out of the house.

I already have a large music collection but I am not sure of the best way of making it accessible. Any ideas?