Hi Spiritsocietyvisuals – did you install the latest version from the download section of your account? (back-up your presets and uninstall your present version first) I think that I fixed the issue during general usage and when loading presets etc, unless you’re referring to it getting stick specifically when you change your driver, in which case stopping and starting audio with the audio toggle might help. I’ll take a look to see if I can recreate, but I’ve not seen that at all with the latest update (although admittedly I don’t tend to switch audio drivers very often).
In terms of getting audio in from your desktop, I think that the various included drivers require a registered input device (mic or audio-in). Your best bet would be to try a virtual audio cable driver such as this to stream audio between apps (I can’t speak for its quality though):