I'm pretty sure the iTunes thing is a common problem. It'll play a few songs, crash, so on and so forth. I reinstalled it, restarted my computer -- Nothing. It's broken, it seems. The real problem is, for some reason I can not hear any sound from Firefox, nor Safari. I will go to view videos online, with no sound at all. Again, restarted my computer, nothing. I don't know what to do here... So, some help on this stuff, please?