I love this!
I can't believe you made this with that sample - you put it to good use!
I haven't heard a lot of dubstep on Newgrounds that I enjoy, but this is very easy to listen to, changes up often enough to stay interesting and not repetitive, and has a wonderful beat to it. The samples you used threw me off when I first listened to it - they didn't seem to belong. The more I listen to this though, the more I can't imagine the song without them. It's definitely not the typical, crappy dubstep that a lot of people in the audio portal seem to enjoy making, too. It stands out from that crowd.
I love the energy of this song, and think you should make more like it and experiment with this idea. Keep up the great work!