Symfonisk speakers (sonos ikea) AppleTv 4

Hi,

I just bought symfonisk speakers from ikea but I can not control the volume with the remote from Apple Tv 4, instead the + an - buttons use the ir to control the volume in the tv.

I can't find any settings where you can choose to control the speakers with the remote.

Anyone with the same problem or with the solution?

Thanks in advance.