2002 mazda 626 making a clunking sound when first accelerating.

[ace581]

Hey guys, new to the forum. I just bought a 2002 mazda 626 and it makes a clunk sound when I first start to accelerate. Also when I'm going 30mph+ if I lean my head out the window a little bit I can hear it making a very faint ticking sound that gets faster as I go more the 30mph. Also about the ticking sound if its going 30mph+ and let of the gas a d let it coast it still makes the ticking sound until its under 30mph. I also made a video of the sound so you can here it for yourselves.

http://youtu.be/fMfhk5G5WaI

http://youtu.be/VZ2g31zLRZQ

What do you guys think it is? I checked the transmission fluid but I don't really know what I'm looking at. I can post a video of that too if needed