OmniSwift

May not be related, but I have Win 11 and ran into similar problem. Found fix in another thread. I used "demo" of other NCH audio utilities and decided to purchase them all, including SoundTap 8.05 (which I hadn't previously used). Unlike the other installations, SoundTap required reboot. Upon reboot, ALL of the NCHs applications stopped seeing my audio output as a source. I couldn't get any of them to work. I tried suggested reinstallations to no avail. Eventually, I followed one post's advice and actually uninstalled SoundTap (which also requires reboot). I then used "install as Administrator" when I subsequently reinstalled SoundTap. After reboot, SoundTap then recognized what I was hearing audio stream for recording source as did all the other NCH applications.