Sony is opening up its PlayStation Store–an online source of downloadable games and other content–to PC users. PlayStation Portable users will now be able to download games via Sony’s PlayStation store. Those games include “classic” PlayStation games, as well as a series of new PSP games available only through the PlayStation store. Existing PSP games will also be available. Among the store PSP exclusives are Syphon Filter: Combat Ops and Beats, both of which cost $9.99 on the store.