Hi - We are 1 month into our new system and I need some advice for an audio delay issue. Our setup is a central rack with cable boxes, DVD, sonos, appleTV, HC1000, HC300, Audio matrix and HDMI matrix. We have local in ceiling speakers in 8 rooms, and HD TV in 4 rooms. The issue is if I have the TV on in a room, when i select the same cable box as the source for the in ceiling speakers the audio comes out 1/4 second ahead of the audio/video from the TV set creating an echo. So if I have a ball game on the TV and select it to play over the ouse audio, the other rooms are a fraction ahead of the TV and there is an echo, or if the bedroom TV is on and the bathroom ceiling speaker is on to the same TV station there is an echo. I know the problem is because a delay is introduced by the processing for video at the TV itself. But I am looking for a solution. The simplest solution would be if the C4 Audio Matrix switcher had a built in delay feature, but it doesn't from what I've read on the forums. Is there a reasonable-cost solution for this? Are their audio delay devices through which I can feed all the audio sources (3 cable boxes, DVDs, sonos, apple tv) before they connect to the C4 audio matrix so i can introduce the necessary 100 ms delay? Thanks for any advice. SJI