enumerate sound cards

You can use (as pointed out by Kozlow_Sergey in the comments) DirectX to enumerate the devices;

#include <iostream>
#include <stdio.h>
#include <dsound.h>

using namespace std;

#ifdef UNICODE
BOOL CALLBACK DirectSoundEnum(LPGUID guid, LPCWSTR desc, LPCWSTR module, LPVOID context)
{
    wcout << "Device: " << desc << endl;
    return TRUE;
}
#else
BOOL CALLBACK DirectSoundEnum(LPGUID guid, LPCSTR desc, LPCSTR module, LPVOID context)
{
    cout << "Device: " << desc << endl;
    return TRUE;
}
#endif

int main(int argc, char* argv[])
{
    if (DirectSoundEnumerate(DirectSoundEnum, NULL) != DS_OK)
        cerr << "Failed to enumerate sound devices";

    return 0;
}

This snippet requires that you link against d3dx9.lib and dsound.lib (actually you might be able to skip the first one).

Hope this helps,
Fredrik Bornander