Flow of data is controlled in a mirror link system in which an AVN system included in a vehicle is interlinked with a wireless terminal. It is determined whether the vehicle is driven or not. Upon determining that the vehicle is not being driven (e.g., the vehicle is parked), the AVN system is interlinked with the wireless terminal through a first streaming protocol and a first control protocol. In contrast, upon determining that the vehicle is being driven, the AVN system is interlinked with the wireless terminal through a second streaming protocol and a second control protocol different from the first streaming protocol and the first control protocol. The first streaming protocol transmits video images and sounds associated with a video from the wireless terminal to the AVN system, while the second streaming protocol transmits only the sounds associated with a video from the wireless terminal to the AVN system.