Do I need ishowu to capture mic and computer audio at the same time?

[Sambista]

Do I have to run ishowu to capture audio from the mic and a browser at the same time or is it possible in OBS alone?

 

[SliVeBurnA]

On a Mac, you'll have to use a third party program like iShowU, Soundflower, BlackHole, Loopback or whatever.