Works great on Window 10 21H1, I've had no problems with OBS itself picking up Audio from my applications. There are some application-specific quirks, especially related to audio sources in webbrowsers, but nothing I consider a dealbreaker.
On the whole, I think this plugin provides a feature that is Instrumental to streaming via OBS Studio.
As it is in early stages, there's quite a few creepy crawly bugs here and there but overall does its job.
Can't wait for what it'll be like a few releases down the line. I can't wait to use it more often then.
This plugin is a fucking game changer. Last build (24 hours ago) stopped working after 2 minutes, this one works perfectly. I am able to capture only my spotify while running youtube in the background, and anything else doesn't get captured. Highly recommend to any and all streamers of any sizes.