My wife and I are sitting side by side, she has a 1st gen Macbook air, I have a newer macbook air, and we are both logged into the fluenz commons, and using flashcards. We are both running the same OS 10.8.2 She gets audio, I don't! Not sure why. Any ideas? I noticed that at the top of her screen is the option for challenge mode on or off, where as on the top of my screen is the option of english/spanish or spanish/english (although toggling that doesn't seem to do anything. Not sure what I'm doing differently, or wrong. Thanks