Is there a Homebrew App for testing the specific channels of a 5.1 speaker system? I need to buy some cables for some Logitech X530s I've got, but I don't want to spend the money before I can thouroughly test my speakers. (Trying to replace that little game console adapter box with some cables because we moved, I lost the box, and there is no cheaper alternative.) If not a Homebrew App, is there a game that has a detailed sound check. I need to be able to separate out and listen for the rears and center channels specifically. Any help? Thanks.