Hey @AdamMassacre , you can now use our new free product Mixkey to stream audio to OBS.
Hey Arne!
Ah cool! I will certainly give it a shot.
Thanks dude 
No more guess work its 100% Reastream plugin.
Just tested it on a blank project. I added it to the stereo out channel and then tried to remove it from the chain. It froze and then instant crash and instant vanish. Thought it may have been bad luck so i tried it again. I opened up a new project added Reastream to the stereo channel/chain and when i tried to remove it from the chain it froze and instant crashed/vanished from my screen.
So yeah…naughty Reastream VST1.0 does not play well with Cubase pro 15.
Im still convinced it maybe a couple of more old vst’s that dont play nice with Cubase 15 but for now i have one banged to rights and up against the wall with my finger in its face 
Just to save some people wasting time, this isn’t a direct alternative to ReaStream as it provides no VST plugin to take audio out of Cubendo to send somewhere else. You’d have to use a loopback to get sound out the DAW into Mixkey. The useful thing about ReaStream is that it can sit as an insert on any track (I have it on my main monitor in Control Room), unfortunately as noted it will crash on exiting Cubendo nearly every time.
A working equivalent is Sonobus
The Control Room is a weird place for picking the audio signal because the project’s signal can be altered by the Control Room.