All you need for low res streaming sources both audio and video is a streamer that handles airplay or Chromecast. Cd res audio is also handled there. A Roku stick will do nicely. You can run hdmi from that to a splitter and out to tv and toslink to dac.
For a/v streaming with audio up to cd resolution Plex is a cost effective application.
Most newer hifi streamers will handle hi res qobuz or tidal streaming. If you have your own music library and want to expand that Roon does it all in conjunction with qobuz or tidal. For a/v you might just stick with Plex.
In almost every case, hifi streamers alone do not provide the complete user experience possible these days. For that you use apps on your smart phone tablet or computer to control things. Roon, Plex, Spotify, amazon, qobuz, tidal are just some of the more popular options.