sound problem with Smart link AMR modem
 

I installed latest 2.9.6 Smart Link drivers for my AMR modem but I can't hear any sound from modem. From Smart link support I get next instructions:
In simplest case you could grab input samples stream (look around read()
system call in modem/modem_main.c) and just play it with sound device in
non-blocking mode.
Problem is that I don't know how to grab input samples stream and how to play it with sound device in non-blocking mode.
Can anyone help me?