How to play 2 waves at the same time? in "C"

[Mif]

Is it possible to play 2 waves t the same time in "C" programming ?
I'm asking this because I'm working on a game, and I have wave sounds for almost everything, like selecting items, alerts, etc.. but I want also to play music in the background. For now if I call multiple times 'PlaySound();' it will play the sounds one at time, and doesn't pass to next sound until the first one ends, and ofcourse the game freeze until the bran stops.
Thanks..

[againtry]

Use several threads, even parallel OpenMP and others
And with a problem like that your own research skills might have come across this within 10 seconds https://stackoverflow.com/questions/39503444/c-play-multiple-wave-resource-files-at-once

[Mif]

Does pthread.h can help me doing this..as you said Use several threads or do I have to download and use openAL, maybe FMOD or SFML or XAudio2? I think is a bit complicate to accomplish this, I just watch youtube examples, and they are pretty hard to understand.. dohhh :\
Is it even possible to use them in "C" ?

[againtry]

Unfortunately I don't know any more than what I posted which was intended as pointers to possible avenues I would take in trying out the idea of simultaneous processing.
As far as threads are concerned http://www.cplusplus.com/reference/multithreading/
and,
https://www.geeksforgeeks.org/multithreading-c-2/
and
https://www.openmp.org/

There are probably many ways to handle it but I'd start by writing a program to play a single wav file - not too hard I guess - and then start modifying that for multiple threads. Of course there is software that does all that for you channel by channel with volume knobs, meters and dials - but that is not programming :(

[Mif]

I got it finally.. I have 2 days of reading and download a bunch of files and l decided at last to play multiple audio files with openAL.lib, which is not that simple as it show on web pages. However for me remains one problem and I did try it but loading files from resources doesn't work with openAL, I mean I tried to use MAKEINTRESOURCE(name_ID) but the program crush so the only solution is to #define FILE "name.wav" and then pass it to alutCreateBufferFromFile(const char* fileName) function and of course to carry on files in same folder with the .exe Here is a sample code:

///try1///
#include <AL/al.h>
#include <AL/alc.h>
#include <alut.h>
#include <conio.h>
#include <windows.h>
#include "resource.h"

#define FILE1   "yourWav1.wav"
#define FILE2   "yourWav2.wav"
#define FILE3   "yourWav3.wav"
#define MAX_NUM 3

int main()
{
    ALuint uiBuffer;
    ALuint uiSources[MAX_NUM];

    alutInit(0, NULL);
    alGetError();

    uiBuffer = alutCreateBufferFromFile(FILE2);

    alGenSources(1, &uiSources[1]);
    alSourcei(uiSources[1], AL_BUFFER, uiBuffer);

    alSourcei(uiSources[1], AL_LOOPING, AL_TRUE);
    alSourcePlay(uiSources[1]);


    while(1)
    {

        if(_kbhit())
        {
            int ch = _getch();

            switch(ch)
            {
            case 'a':
                {
                    uiBuffer = alutCreateBufferFromFile(FILE1);

                    alGenSources(1, &uiSources[0]);

                    alSourcei(uiSources[0], AL_BUFFER, uiBuffer);
                    alSourcePlay(uiSources[0]);
                    break;
                }

            case 'c':
                {
                    uiBuffer = alutCreateBufferFromFile(FILE3);

                    alGenSources(1, &uiSources[2]);

                    alSourcei(uiSources[2], AL_BUFFER, uiBuffer);
                    alSourcePlay(uiSources[2]);
                    break;
                }
            }
        }
    }
    for(int i = 0; i < 3; i++)
        alDeleteSources(MAX_NUM, &uiSources[i]); // <-modified to delete all 3
    alDeleteBuffers(MAX_NUM, &uiBuffer);

    return 0;
}