Abstract: This applicant is directed to auction-related media content management. A server system executes a media play application on a media content management platform accessible to the plurality of user accounts. A first user interface is displayed in the media play application for a first user account, and includes an information item identifying a media content item and a user-selectable affordance item associated with the media content item. The server system receives, from the first user account, a user action on the user-selectable affordance item to initiate an auction of interest of the media content item owned by the first user account. In response to the user action, an auction request of the media content item is generated for the first user account. The server system receives a response to the auction request from a second user account, and associates the media content item with the second user account.