To keep things simple and effective, Sonos or Bluesound (affiliated with NAD and PSB) network streaming systems are worth a look. They use a standard network data connection (can be wireless) to computer music server and can be used with external DAC of choice.
I have been using similar Logitech Squeezebox system (discontinued) for a number of years with excellent results and old Roku Soundbridge prior to that.
I have started to run PLEX media server in addition to Logitech MEdia Server on my computer music server, and connect to that from an Amazon Fire TV box with TOSLINK out to my DAC in my second system. Nice for high quality streaming of all media types, not just music, and the server and web clients are free. You pay $5 for the app on a mobile device (for mobile access from anywhere with an internet connection, like a smartphone), Ipod or tablet or same price for app on the AMazon Fire TV (Android) device.
I have been using similar Logitech Squeezebox system (discontinued) for a number of years with excellent results and old Roku Soundbridge prior to that.
I have started to run PLEX media server in addition to Logitech MEdia Server on my computer music server, and connect to that from an Amazon Fire TV box with TOSLINK out to my DAC in my second system. Nice for high quality streaming of all media types, not just music, and the server and web clients are free. You pay $5 for the app on a mobile device (for mobile access from anywhere with an internet connection, like a smartphone), Ipod or tablet or same price for app on the AMazon Fire TV (Android) device.