All Bang & Olufsen connected speakers have a 'Join' feature. You can activate the ‘Join’ function from any room. By using this feature, you will join in on the source that was activated last in a setup.
If your family is enjoying a playlist in the living room, you can listen to the same music in the kitchen. If you change channel or source in any of the rooms, the next time you ‘Join’ from a room, you will join that new selection. You always ’Join’ the source that was selected or changed last.