New start high resolution files

Hey guys, I am trying to get into downloading flac files from hd tracks and getting the correct bit rate to my receiver. My receiver is a yamaha 1030 that can play flac files. I downloaded the j river media center to my imac and set the dlna server up in the player . Than I used the server option on my receiver to stream music from the j river player to my receiver with gizmo(remote for j river for android). Will the dac inside my receiver play these files correctly or should i get something like a audio engine d2? which is a wireless dac, where a transmitter connects to my imac and a receiver that is connected to my yamaha via rca? The yamaha has a es9006 sabre dac and the audio engine wireless has a burr - brown pcm1792 dac. I'm not sure if the dlna server is even sending the right bit rate to my receiver . I ripped a cd to j river as a flac file and it played clearly , but can I do better? Thanks .