I'm having a rather bizarre problem with iTunes. I'm using a laptop to route all of my iTunes songs (located on a different laptop) through my stereo system. The setup works well, except for one glitch. I can't play any of the protected AAC files on the networked laptop. When I try to authorize the computer, I get a "cannot log onto iTunes Store" error message. However, my computer can access the internet just fine, and if I try to access the iTunes Store from this particular computer through the iTunes software, it works just fine. I can browse through the store, but if I try to log in to buy a song, I get that same error message. I have only one other computer on my home network authorized to run protected files, so it's not an issue of trying to authorize too many computers. I'm confused and somewhat frustrated with the problem. Any suggestions?