A couple days ago, I installed a set of 5.1 speakers for my computer (Logitech X-540). So far so good. Can't say, though, that I've noticed a big difference in FSX. Two questions, then:1. What should I listen for?2. Is there something I need to do to enable 5.1 sound in FSX? In Win XP control panel, under Advanced Audio Properties, "speaker setup" is already set to "5.1 surround sound speakers." My onboard audio (Realtek HD) supports 5.1, and I have confirmed that each speaker is getting its proper surround sound output. (And before anyone says, "Get a dedicated audio card, I already have one on order, X-fi XtremeGamer.)

In the external view pan around the acft and you should hear some engine sounds from the rear speakers