PowerLite 71c Multimedia Projector

Yes, the projector supports external audio. The projector comes with a PC audio cable to connect from a PC/Laptop audio-out port. Connect that cable to the audio-in port located under the computer/component video port. There is an external audio port for use of external speakers. The video composite cable has audio support as well. For S-video please check the manufacture's documentation for proper audio support. Other than composite video, there is only one audio-in port.