A karaoke network system is composed of a central station for serving a plurality of song data pieces, and a karaoke terminal connected to the central station through a communication network having multiple channels for selectively receiving therefrom one song data piece so as to locally present a desired...http://www.google.com.au/patents/US5899699?utm_source=gb-gplus-sharePatent US5899699 - Karaoke network system with endless broadcasting of song data through multiple channels