HDMI from comp to HDTV, unique audio possible to each?

My wife likes watching netflix on the TV, and I dont always like what she watches so ill sit down and play some games. However the problem is all the sound either comes out my speakers, or the tv.

Is there any way to have each screen put its own sound out, so she can watch her netflix (and hear it) and i can play/listen to my games at the same time?

I've been looking around for this kinda thing for a long time now. Finally found a way, which is so easy I can't believe it never occured to me.

Whatever program is used to watch movies, have the audio output change to tv speakers for it, while keeping computer speakers as the default drive so everything else comes out of it.

Edit: Just noticed you said using netflix so probably via web browser? Hmm, maybe you can set the web browser to use tv speakers then. But for this, whenever you use the web on PC and want sound coming from speakers, you'd just have to change it up again.