Audio Outputs

I have 6 channels of playout, all going to a blackmagic decklink quad.
However, I need to extract the audio and route this through different hardware.
I could use SDI audio de-embedders, but that is a big expense and a lot of wiring when it would make sense to do it on Caspar.
I have a Dante Virtual Sound card on the caspar playout server, so ideally for each channel of video playout, I'd like to route the audio for that channel to a specific dante channel on the local machine (Dante is setup as WDM source).

I can't for the life of me figure out how to do this, I can set it to System Audio, but this just seems to accept the combined audio from all channels and output it to the system speakers. Is there a way to do this?