Help or suggestions how to setup run JRivers media from my computer


Hello to all I have JRivers media  24,I have downloaded on my computer in the next room  and transferred files, my Big question is what do I need ? I have a dac in the room with the stereo I have WiFi extenders
from my router to the extender,then another extender and Ethernet cable behind the stereo in a wall socket.
what do I need ?  I have the dac itself ,I need a interface something a Ethernet cable will plug into
then communicate with the dac whichwill be plugged Into the preamplifier.
is there a way I can do this ? Any help would greatly be appreciated, Thank you.

128x128audioman58
Thanks much for the suggestions I was hoping to find something
under $300. Trying to help my brother out , he can buy a player 
 if he had more to spend ,he is still stuck on CDs . JRivers 
is good  I was wondering if a raspberry pi3  would. Work ?
is this possible to connect to a dac running Ethernet range 
extenders on both end from router ,to dac? Trying to find a solution 

Raspberry Pi has USB outputs, so I believe it will work.  Never tried this though.

Steve N.