Metasounds - is there a way to select different output devices?

Since I cannot find news on audio surround support in UE, I was thinking to implement something custom for an interactive exhibit.
The “simple” way would be to delegate all audio stuff to another application - maybe a MAX-MSP system developed by a sound designer…
But.
I’m wondering whether there is a way to send a sound to a particular soundcard/channel.
This would semplify stuff…