audio conference

Hi All,
  i'm developing an audio conference targeted for more than 100
participants in a conference. I'm using "audiomixer" element to do this.
Its working fine if the number of participants is less than 10 . However, I
see that the number of threads created are huge.  For each input pad of an
audio mixer, one thread is created .like this if there are 100 participants
then the number of threads would be 100 (input) and 1 for output from the
mixer. Is there any way to reduce the number of threads used by the
audiomixer element ? Any other suggestions would be helpful

Thanks & Regards