Need help linking media with Mogurt Files. They wont show up!

Hey guys, I recently am new to using Premier Pro and am still in the learning process. I have downloaded a bunch of Mogurts from Motion Array to my computer to use in different videos. I moved some things around in my files and now have to link the mogurts back to my video file for them to work. Problem is that It will not show the mogurt files when I try to link them. I go to link and find the file with the mogurt, and when I click to link it, there is no file. But, the file is there when I look at my hard drive off premier. Any advice? Or has anyone else come across this problem??