Abstract: A network multimedia system comprises a selecting means, a generating means, a processing means and a playback means. The selecting means is used for selecting audio data contained in a CD. The generating means is used for generating an image file having at least one audio track by compressing the audio data, the audio track corresponding to the audio data. The processing means is used for converting the image file into the CD, and for transmitting a playback signal. The playback means is used for receiving the playback signal to playback the CD. The network multimedia system in the invention can playback the emulated CD in a digital manner, so as to directly playback the VCD image file with CD playback software.