How to get 5 1 surround sound from pc for free

[tr067]

I need to know what to down load so my 5.1 surround sound to work ?

 

[soundguruman]

1. the dolby surround drivers from the dolby website
2. a program source that contains surround sound, like maybe a fancy DVD
3. The correct speakers connected correctly
4. the settings in your audio software must be set correctly