VLC Media Player is a freeware digital media player application for Windows and Linux computers. If you play a file that supports 5.1 audio, VLC Media Player can output that audio signal to your computer's connected 5.1 surround speakers. If your file does not support 5.1 audio, VLC will not be able to output to that format.
Open VLC Media via your computer's "Start" menu.
Click "Media" and then "Open File" to open the video or audio file you want to play. You can also open the file by dragging it over the top of the main VLC program window.
Click "Audio," and select the "Audio Track" menu.
Select the 5.1 audio track in the file. VLC Media Player will now begin outputting audio for that track in 5.1 surround sound.