I've been told many times that Linux has a Voicemeeter equivalent or that it, at the very least, can do the same with X number of workarounds. Pipeweaver is the most comparable I've seen. Now, I appreciate the effort, but like the workarounds, it's far from what Voicemeeter does. Unsuprisingly, I've also been told to make my own app so I can get the features I want or need. There's just one problem with that. I'm an audio engineer, not a programmer.
