Method, apparatus and system for playing multimedia file: United States Patent

At a mobile terminal coupled to a control apparatus using an interface provided by the mobile terminal: receiving a user instruction to play a main multimedia file; playing a pre-arranged multimedia file associated with the main multimedia file before playing all or a portion of the main multimedia file; while playing the pre-arranged multimedia file, receiving an operation signal from the control apparatus through the interface, wherein the control signal is sent to the mobile terminal in response to a user operation received at the control apparatus, and the control signal corresponds to a control instruction regarding playback of the pre-arranged multimedia file; in response to receiving the control signal: if a user account associated with the mobile terminal meets authorization criteria with respect to the control instruction, executing, according to the control instruction, a control operation on the pre-arranged multimedia file that is being played.