Is there anything special that needs to be done to make the optical audio splitter work in the receiver? BTW, my issue is that I have a Sony Bravia model 48w590b, a Vizio Soundbar model S3821w-c0 and a Denon receiver AVR S910. Right now, I cannot get the Soundbar to work. Since I don't have any front speakers connected to the receiver, I can only hear the surround rear portion of the audio. The tv says the sound is being output to the audio system, but I guess it means the receiver, not the Soundbar. The Denon receiver has ARC which is connected to the hdmi in the tv corresponding to arc as well. Should I maybe hook t up to another hdmi port?