I don’t know about AES67 but I’ve used Snapcast now for a few years and it works great. I use a central Mopidy service that streams to a few Snapcast clients connected to audio devices (not directly to speakers though). The clients run on normal PC hardware, Android and some on Pi’s with DAC’s from Hifiberry. The setup was very DIY but has been running very stable after that.
I second that. Community was great. The absurdity of the episode with the ABBA soundtrack still makes me laugh.