I use powerline adapters. You plug one into a wall outlet near youir router and run an ethernet cable from the adapter to the ethernet port on your router. The other adapter you plug into a wall outlet near your receiver and run an ethernet cable from it to your receiver. (you can't use a powerbar)
Amazon sell these; last time I bought a pair it was $70
Same here. Just bought 2 from ebay ($30 total) to replace one I bought a few years ago when D* sold them. Easy Peasy and I have a spare. Works great.