SDL_OpenAudioDevice with multiple devices - c++

Question

I am currently writing an application that will output sound to 3 different audio devices. For that, I have installed 3 USB Audio Devices in my PC, all the same brand. I wanted to use SDL2 as output device (although I am open minded for other suggestions). I had a look at the documentation and it states as the first parameter (device):
a UTF-8 string reported by SDL_GetAudioDeviceName(); see Remarks
Now I have written a sample program, that just lists the available devices:
#include <SDL2/SDL.h>
#include <iostream>
int main()
{
SDL_Init( SDL_INIT_EVERYTHING );
std::cout << SDL_GetError() << std::endl;
atexit( SDL_Quit );
int count = SDL_GetNumAudioDevices(0);
for (int i = 0; i < count; ++i)
{
std::cout << "Device " << i << ": " << SDL_GetAudioDeviceName(i, 0) << std::endl;
}
return 0;
}
It enumerates all available devices. The problem is, that all 3 devices will give me the same name:
Device 0: Internes Audio Digital Stereo (IEC958)
Device 1: C-Media Electronics, Inc. Audio Adapter
Device 2: C-Media Electronics, Inc. Audio Adapter
Device 3: C-Media Electronics, Inc. Audio Adapter
Is there any way to use something else (e.g. the USB Path) as the parameter or to make sure that I can open all 3 devices?