For most p0rnstars, I have a folder for each girl with her pics and movies, regardless of which website it's from.
Within that folder, I have one folder for her pics and another for her movies.
For OAS and Playb0y, I created a main folder with subfolders for each girl. In each folder, I keep movies and photo sets in different folders.
I also include any files from non-OAS or Playb0y sites she may appear on. These are the only sites for which I have unique folders.
I keep all of the above folders on my hard drive in folder called "private"
Occasionally, I'll back-up my stuff onto a portable WD Drive. When that drive gets too full (or the files get old), I'll either delete them or burn the ones I want to save onto DVDs.
I hope that all makes sense!