http://imgur.com/ipnQk
Location for this folder in Win7 is: C:\Users\<username>\AppData\Local\SWTOR\swtor
When you play SWTOR, they will be downloaded when you move from 1 area to another area, when you quit SWTOR, those 2 files will be deleted.
Any1 knows what they are and why does it have to be like that?
It seems like not all the files are installed on your comp, SWTOR will go out and download those needed files for the area you are going to enter and delete them when you quit SWTOR.