performance problem

[littlbox]

I have installed shoutcast Dnas in order to transmit realtime audio from the microphone in of my onboard soundcard through a 56k pstn connection.Everything works fine but the performance is not very good.There is a delay of approximately 10´ of the audio transmitted and the time that is delivered to the client.I have set the quality of the streaming audio to the lowest settings (24kbps) but with no result.
DNAS runs on a celeron 566 with 128mb ram and an onboard soundcard...
its not the fastest machine but i think this isnt the problem.
If there is something to configure on the dnas or its source encoder(winamp+dsp plug in) it would be great help if someone told me.
its really essential to me to achieve realtime streaming audio.
thanx in advance.