So I have this setup:
MacbookPro, external DELL monitor and Samsung TV that is connected to Apple TV. I study at home at the moment and use the laptop extensively. Sometimes I play movies to my flatmates via my Mac, but I want to keep the ability to watch my study videos on a Mac too.
So for example:
Playing a movie via Apple TV and have the audio output on the Samsung TV, at the same time having videos playing on my mac and have the sound coming from the headphones connected directly to my Mac.
I have looked at Aggregate Device in Audio MIDI setup on OS X, but I can't seem to figure out how to set it up properly.
I hope it is possible to do what I am looking for and I would really appreciate any advice.