I want to stream music to different areas of my house, simultaneously from 1 apple device. (macbook or iphone)

I have been able to stream music from itunes and spotify through a hifi connected to my TV through apple TV.

I've also been able to send sound to 2 outputs from my mac. The 3.5mm output on it and apple TV however the sound is out of sync by half a second or so.

If I bought an apple airport express, could I use this and apple TV to play music (from spotify OR itunes) at the same time and remain in sync?
Or is there a way to correct the output time lapse between my mac's 3.5mm out and apple tv?

Thanks!

AirPort Express

AirPort Express

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