Streaming in sync on 2 different audio sets

[Superfire]

Hello!
I have a Raspberry Pi playing audio on an LG sound bar on its HDMI output.
In the same time, it sends the stream on HTTP port 8080, so another Raspberry (Sonos) is able to catch and play it in another room.

Of course, there is a delay of a few seconds between the local and the remote sound. I am not able to found a way to avoid it. It would be fine to put some delay after sending the stream on the LAN and before playing it on the HDMI output, has anyone any idea how to do it?

Thanks in advance for any help!

[unidan]

Hi, how are you doing the streaming ?