Audio - No sound in Netflix

Hi, I saw a post like this a short while ago. I went to check mine and I had the same, no sound during movie playback. I used the audio up/down buttones which normally make that clicking sound all of us MacBook Pro users are familiar with. No Sound!

It was fixed by going into my System Preferences, Sound. In the Output tab, I saw the new Apple TV option was selected. I guess this happened when I tested my new Airplay to my Apple TV? (Which worked great btw) Anayway, I selected Headphones and all sound is back.

I think we all have a little learning curve with the new Mountain Lion, which I stil think is very cool!!!

Happy Mac'ing....