D16y8 tranny noise
 

so for the past week or so, whenever my engine is cold, when i start it there is some rattling that seems to be coming from my tranny. It ONLY does it when its really cold, and stops when i put it in gear. Depressing the clutch alone does nothing until i put it in gear. Thought it might be a spun bearing at first, starting to seem like a tranny issue though. I do need to replace my clutch, could it maybe be the pressure plate or throwout bearing? here is a vid of the noise
http://www.youtube.com/watch?v=UAWfGiLqWrw
any and all help is appreciated