I don't. I only have a camera phone and trust me, with the videos of the sound taken from my band, you wouldn't want it as a comparison to anything else.
This is about the best thing I could find you that would be close. If you're going to leave everything else stock, I gotta say this thing is REALLY mellow at low rpm's and idle, but again when you open it up, its pretty good and throaty. I had a 240sx with a fart can that I took off from a light today with my little 4.7l. He was next to me and as soon as he heard my exhaust He gunned it. I gave it a blip and pulled right next to him and started to pass. I laughed and just smiled and let him go flying by. I wasn't going to go racing in town for the sake of a loud muffler, but it sure made me laugh that he thought everyone with a louder exhaust than factory was racing him.