Alternate players with matrix to read multichannel audio files, to listen polytrajectorial space music: 

1

. Lyra Multichannel Player (up to 16 channels, Windows 7 freeware)
http://artlyra.com/iancostabile/art/software/#lyra

The + is: there is an ins/outs matrix inside to choose which input goes to which output: very useful!

2

. Easy Windows x86 and x64 (works with Windows XP) free tools with: 
1. MultiChannel ASIO Renderer driver
http://blog.familie-buchberger.at/2015/12/15/multichannel-directshow-asio-renderer/
2. MPC-HC.1.7.13 (the player: media player classic-home cinema) 
https://mpc-hc.org
3. ASIO4ALL (to plug any audio software to any sound card) 
http://www.asio4all.org

The + is: there is an ins/outs matrix inside to choose which input goes to which output: very useful!

1. install MultiChannel ASIO Renderer
2. install MPC-HC.1.7.13 (the player)
3. click to menu View -> option -> Playback -> Output -> at [audio renderer] choose: Multichannel Asio Renderer Filter (0080000)
4. press OK
5. open an/several 8 channel audio file
6. click menu Play -> Filters -> Multichannel Asio Renderer Filter
7. pick your audio driver: ASIO4ALL or JackRouter or ...: if none install ASIO4ALL and restart MPC
8. in Channel Mapping control the ins/outs connexion 
9. in Output Volumes control each channel volume