It is important to use the correct HDMI connection on the BDS, marked with ARC. Also, the proper input must be selected with the AUX input selector button, which scrolls between the six AUX inputs. It always selects the AUX input that you used last, so once you have used the AUX ARC input, the BDS unit remembers it until you select another AUX input. Of course you have to have a TV which actually supports ARC.