Everyone that owns a multichannel soundcard with ASIO drivers can use this DirectShow filter to output audio up to 24 channels.
A channel mapper is included, so you can map e.g. 7.1 DTS signals to different output channels (n:n allocation of input to output channels possible).
Details at: http://blog.familie-buchberger.at/2015/12/15/multichannel-directshow-asio-renderer/
Regards,
Michael