In this paper, we introduce an innovative, scalable to lossless audio streaming system applicable to mobile platforms. In the system, bit streams in MPEG-4 Scalable to Lossless Coding (SLS) audio format are used and the scalability feature of SLS audio is fully utilized. In the streaming server, the conventional streaming process is enhanced by delivering data packets adaptively with the dynamics of real-time network bandwidth. In the streaming client, the directshow technology is exploited efficiently. The system is capable of acting as the platform paradigm of the next generation system of streaming high quality music to mobile devices.