What if the amp in the adjacent zone (say Kitchen next to Great Rm media zone) is a part of a multi-room amp and not zone 2 of Yamaha receiver, can the MusicCast options get rid of delay so that there is no audio delay at all on the main zone? That is simply what needs to happen. Party mode doesn't work in this case because it only syncs yamaha main zone and zone 2. Overall there is still a delay relative to the analogue audio source.