Method and apparatus for servicing and reproducing ubiquitous audio

A method and a system for reproducing and providing ubiquitous audio are provided to use a memory card storing only loss sound sources as an authenticode which permits the access of lossless sound sources which a CP provides, thereby streaming or downloading the lossless sound sources and protecting the right of the CP. An audio service system checks whether a memory card storing loss sound sources and the authenticode of the loss sound sources is inputted to an audio reproduction device(412). If the memory card is inputted to the audio reproduction device, the audio service system is connected to a contents server through a network. And the audio service system transmits the authenticode of the loss sound sources of the memory card and the instinct ID(Identification) of the audio service system to the contents server(414). If the authenticode permits the contents server to use lossless sound sources for the loss sound sources, the lossless sound sources are streamed or downloaded from the contents server(418,428,430).