I Have an Onkyo 608, connected to it i have PS3 via hdmi, Virgin media via hdmi and optical cable and also sonos via optical cable. the sonos is setup to work on tv/cd. All has been fine but i have just upgraded to a smart tv and have used the ARC function for returning sound from the tv to the AV. When i set the Onkyo up to work like this the sound from my sonos doesn't come through. if i switch the Onkyo setting for audio return off then my sonos music comes through. Is there any way i can set it up where i dont have to mess with setting when switching from one to the other?