Can't hear the sound when playing back recorded sound file

Hi All,

I tested the sample wave record program waverec.c on QNX 6.4,but no sound can be heard when the generated wave file is played back on QNX or Windows player.The sound signal is output from a speaker port of a computer and fed in the Line in port of the test board.

Below is the the output for audio when executing command “pci”
Class = Multimedia (Audio)
Vendor ID = 1022h, Advanced Micro Devices [AMD]
Device ID = 2093h, CS5536 [Geode companion] Audio
PCI index = 0h
Class Codes = 040100h
Revision ID = 1h
Bus number = 0
Device number = 15
Function num = 3
Status Reg = 2a0h
Command Reg = 5h
Header type = 0h Single-function
BIST = 0h Build-in-self-test not supported
Latency Timer = 0h
Cache Line Size= 8h un-cacheable
PCI IO Address = fe00h length 128 enabled
Subsystem Vendor ID = 1022h
Subsystem ID = 2093h
Max Lat = 0ns
Min Gnt = 0ns
PCI Int Pin = INT B
Interrupt line = 5
CPU Interrupt = 5h

Started audio driver: geode_cs5536

Kindly please help on it.

thanks a lot in advance.