Abstract: Multi-user media playback systems are disclosed. In an example, a main account associated with a media playback system can invite additional accounts to access resources of the media playback system. An explicit association between the additional accounts and one or more of: the main account or the resources of the media playback system can be generated and stored based on the invite. When an access request to access a particular resource of the media playback system is received from a particular additional account, it can be determined whether the additional account has access to the particular resource based on an explicit association between the particular additional account and the particular resource and/or based on one or more implicit associations. In some examples, the one or more implicit associations can be derived from a topology of the media playback system.

Abstract: The disclosure relates to management of media playback system splits and location designation for partitions of a media playback system. Some techniques involve storing an association between a media playback system and a location identifier. When a split of the media playback system is detected, an indication of the split is provided via a user interface of the media playback system. Based on an input received via the user interface confirming the split, one or more of the partitions of the split can be dissociated from the location identifier and associated with a different location identifier.

Abstract: Media playback system selection and switching techniques are disclosed. Some techniques involve receiving, from a computing system, a set of data comprising data corresponding to media playback systems registered with respective accounts. A first graphical user interface comprising graphical representations corresponding to the media playback systems can be displayed. When an input corresponding to a selection of a particular graphical representation corresponding to a particular media playback system is received via the first graphical user interface, a second user interface corresponding to the selected system can be displayed using at least part of the data received from the computing system.