Hi @DUBANUEL.
Thanks for reaching out and welcome to the community!
We acknowledge your feedback and my apologies for the experience.
As per the Surround sound guidelines and limitations, there are features on Sonos products that will be disabled when used as surround speakers and that includes “Line-in”. While there must be a logical reason why certain features have to be disabled, rest assured that I will log your feedback and pass it along with the team.
If you have any questions or concerns, don’t hesitate to reach out, we’re always here to help.
