Returns mixer device string for the specified sound device.
PRL_RESULT PrlVmDevSound_GetMixerDev( PRL_HANDLE hVmDev, PRL_STR sMixerDev, PRL_UINT32_PTR pnMixerDevBufLength );
PrlApiVm.h
PRL_RESULT. Possible values are:
PRL_ERR_INVALID_ARG - invalid handle or null pointer was passed.
PRL_ERR_BUFFER_OVERRUN - the size of the output buffer is not large enough. The parameter that is used to specify the size will contain the required size.
PRL_ERR_SUCCESS - function completed successfully.