I teach virtually and I would love to be able to combine my voice, a guitar, a keyboard, and iTunes into on virtual output for my classroom. Rogue Amoeba’s Audio HiJack is amazing in terms of routing and combining sources, it’s just the last part of making a virtual output. They also have a product called loopback which is powerful and amazing in terms of audio routing, but there doesn’t seem to be too many players in this space. I have been looking at Sound Siphon who is close to getting the job done for, but either it isn’t working (new Mojave is tricky I guess), or I am not figuring it out.
Are there any other like programs? I used to use soundflower, but that was pretty hacky. I’m pretty close to spending the money, I just want to make sure I’ve explored all options before settling down and dropping some money.