Most Macs of recent years don’t have Toslink output but they all have USB output and that can be used to connect to a DAC with USB input. If the Wadia doesn’t have USB input you could explore connecting via WiFi from the Mac to something like the Audioengine B-Fi which has Toslink output that could go to the Wadia.
https://audioengineusa.com/shop/adapters/b-fi-multiroom-music-streamer/
There are probably other similar Wifi devices. I have an Arcam rPlay that works very well connecting the iMac in my office to the Bel Canto DAC in my living room but it’s no longer distributed.
There are several music applications that can be used to manage your library, Apple Music is included with Macs and works fine but many people prefer Audirvana, as mahler123 recommended, or JRiver.
https://audioengineusa.com/shop/adapters/b-fi-multiroom-music-streamer/
There are probably other similar Wifi devices. I have an Arcam rPlay that works very well connecting the iMac in my office to the Bel Canto DAC in my living room but it’s no longer distributed.
There are several music applications that can be used to manage your library, Apple Music is included with Macs and works fine but many people prefer Audirvana, as mahler123 recommended, or JRiver.