[Feature request] Separate audio sources

[Reru01]

I would like to record audio from captured sources, like games, separately from everything else, I am getting into streaming and would have liked to use your program to do so, but I can't because there is no way to ONLY record the game audio and not the ENTIRE desktop audio. I can not use entire desktop audio capture because I also have background sounds such as discord play to it and do not want to do a 10+ step process to make sure everything but the game is separate and I am still able to hear everything. I know when you record a browser window directly from OBS you can "control audio via OBS" and would like to be able to do that for every scene I have.