A multimedia system for playing multimedia data is provided. The multimedia system comprises a media receiver and a remote control device. The media receiver comprises a multimedia processor and an interface server. The multimedia processor is for playing the multimedia data, accordingly generating first media information, and outputting the first media information. The interface server is for receiving and transforming the first media information into second media information, and outputting the second media information, wherein the second media information has a first markup language format. The remote control device receives and displays the second media information.