Historical informations on sound recording issues, machines and techniques, brings overview on importance of sound heritage. Afterwards, Collection of Old Gramophone Records of National Library of Serbia will be presented, number of records, some problems we are facing during its cataloguing, and through short global analysis of Collection. Second part brings questions and answers on digitization issues of sound recordings, on one side, and on the other, it shows each step of digitization process, from its beginning to its end, which is digital object, public available. Short analysis of our project will be shown at the end, along with some future steps and ideas.