Marantz NA7004 internet tuner with ethernet only input (no wifi), to accept Google 4k Chromecast HDMI

From a quick look at the spec, this player does not have a wireless connection.
So you will need an Ethernet connection from your computer to the player. Ethernet cables are not expensive and are available in many lengths.
Then from the computer check that the network settings see everything.
From there "Stream to device" should work from many programs.
 
So you will need an Ethernet connection from your computer to the player.

That's the way I have it now but it NA7004) can't find "Radio Paradise" "flac quality selection", only MP3, but Radio Paradise on my computer does, and can cast to the Chromecast.
I can't see how to send it (RP flac music) over the hard wired ethernet connection from the computer to the NA7004, how is that done?

Cheers George