Sound Card errros

[hadyos]

Hi

Every time I start a virtual Windows machine with args: -soundhw ac97 I get this errors:

oss: Could not initialize ADC
oss: Failed to open `/dev/dsp'oss:
oss: Failed to open `/dev/dsp'
oss: Reason: No such file or directory
oss: Could not initialize ADC
oss: Failed to open `/dev/dsp'
oss: Reason: No such file or directory
audio: Failed to create voice `ac97.pi'
oss: Could not initialize DAC
oss: Failed to open `/dev/dsp'
oss: Reason: No such file or directory
oss: Could not initialize DAC
oss: Failed to open `/dev/dsp'
oss: Reason: No such file or directory
audio: Failed to create voice `ac97.po'
oss: Could not initialize ADC
oss: Failed to open `/dev/dsp'
oss: Reason: No such file or directory
oss: Could not initialize ADC
oss: Failed to open `/dev/dsp'
oss: Reason: No such file or directory
audio: Failed to create voice `ac97.mc'

I using in Intel HD sound card on the host.
Anyone knows what is the problem and can help solving it?

By the way, the card is seen after the machine boots up, but no sound.

Appreciated very much,
Yossi