I have a Dayton EMM-6 and and interface and need to start learning how to measure as I trying to first start with the easy stuff and tune my 2.1 channel setup in my A/V room. What is some good spectrum analyzer software to use that will not break the bank. I know there is probably some freeware around and would be willing to try, but I know some of those tools are limited. Is it also good to produce the white noise and sweeps from the computer, or just make a CD with everything to play back? Sorry to ask such noob questions on this, but I got to get started somewhere on measuring. Thanks guys.