SHOUTcast buffers around 15 to 45 seconds worth of audio on the server to
keep the stream consistent and for quality gains. Without the buffer, the
quality of audio would be significantly worse with poorer sound quality, gaps
and audio glitches.
This behaviour is built into SHOUTcast and can’t easily be removed, nor
would it be sensible to attempt to remove it. Higher bitrate plans will have
slightly lower delays as the buffer will fill up quicker. This is the only way
to lower the delay caused by the buffer.