A multimedia output apparatus includes an audio port to receive a first audio signal, a connection port to receive a first video signal or both a second video signal and a second audio signal, a sensor to sense whether the connection port receives only the first video signal or both the second video signal and the second audio signal, a switch to select one of the second audio signal received through the connection port and the first audio signal received through the audio port to be output, and a controller to control the switch to output the first audio signal received through the audio port when the sensor senses that only the first video signal is received through the connection port and to output the second audio signal received through the connection port when the sensor senses that both the second video signal and the second audio signal are received through the connection port. Thus, the multimedia output apparatus and a multimedia system comprising the same is capable of receiving a video signal and an audio signal from both a first multimedia source that transmits a video signal and an audio signal individually through individual interfaces and a second multimedia source that transmits the video signal and the audio signal in a combination through the same interface. The multimedia output apparatus is further capable of transitioning between the two multimedia sources.