I got the nifty 5 Channel Stereo on my Onkyo receiver.. works great for music since each speaker is equal in sound.. I use it while watching tv also.. not sure why.. just like how it sounds..
the surround sound settings really are only for watching movies that are Dobly Digiatal, DTS, or even Pro Logic.. but sadly Pro Logic isn't really all that like we used to think it was.. the back speakers are actually mono