Do you want the same music everywhere, or do you want each person to be able to play their own music where they are? Almost all the installable-box systems ass

Do you want the same music everywhere, or do you want each person to be able to play their own music where they are? Almost all the installable-box systems assume the first: you want the same music in your office, the living room, your bedroom simultaneously, and if your husband picks up a controller and changes it to what he likes, that's what everybody gets. If you want the second, you need a music server that makes a filesystem full of FLAC and MP3 available via NFS or CIFS or DLNA, and a bunch of clients with speakers around that house that can be used to select music and play it. Those clients can be Raspberry Pi based units that look as good as you're willing to pay for, and the whole thing will take you one afternoon.