How can i have 2 simultaneous audio audios playing at the same

Install JACK and QJackCtl
Open QJackCtl
click "patchbay"
connect audio inputs to audio outputs
boom

>>61631517
Im using Windows

There's a program that lets you set audio out for each process, can't remember what it's called

>>61631316
Try this maybe
https://github.com/audiorouterdev/audio-router

Otherwise, some audio client programs themselves like your game should let you choose the sound card to use in the settings program. Some just use the default though and don't have an option to change it, in which case a program like that audio-router thing might work to fudge programs to use the card you want.

On Linux, PulseAudio lets you reassign which sound output to use for different programs / clients. With plain ALSA though, I think it's pretty much the same as Windows where clients kind of have to decide themselves what they will use.