I currently have my PS3 connected to a 42" DLP 720p Samsung TV... and it's working marvelously. However, I think I'd like to get a 5.1 channel surround sound system. Does anyone reccomend this, and if so a certain model? Should I get a HTIB (home theater in a box) or a component and receiver system? Finally, how would the audio function if I hook up the surround sound system to the PS3 with an optical cable while the HDMI still connects the PS3 to the TV?