As mentioned the router is in the living room and quite far from the room that hooking it up via ethernet cable is hussle. What I am asking is if I can share the internet that is being picked-up by my PC(via wifi) to my bluray player via ethernet cable since both of them are in the same room.
Enable internet connection sharing on your PC. That way, you can connect the PC to the blu-ray player via a crossover ethernet cable. Just google instructions on how to share internet from your PC.