I have a TiVo box, Sony Bravia TV & an LG AKB73575421 soundbar. I am receiving sound from the soundbar but the Virgin remote will not change the volume on the soundbar. I have re-input the code to the tv and the remote controls the tv correctly. I’m using optical connection in the tv settings via the optical cable to the bar. Please help me to get the remote to control the soundbar. I have been through all settings on the tv and TiVo box but can’t get it to work. Please help. Thanks.