NTSTATUS
    SoundWriteRegistryDWORD(
        IN PCWSTR RegistryPath,
        IN PCWSTR ValueName,
        IN ULONG Value
        );
The SoundWriteRegistryDWORD function assigns the specified value to the specified value name in the registry, at the specified registry key.
Returns STATUS_SUCCESS if the operation succeeds. Otherwise returns an NTSTATUS error code.