I agree with brucek (good idea on my part, since he's a genius
). Don't bother with the midi. It'll save a couple of minutes, but you can just figure out the filters on REW and manually put them into the Behringer - it'll take all of 5 minutes. I think you'll be very pleased with the results you obtain with REW. Here's the ugly part - do a sweep that goes to 20,000 hz, and you'll be depressed with how uneven the rest of the FR is
.