As far as i know, at the moment, no. A soundtrack was actually only released for Season 1, not Season 2. So the chance of them doing one for Season 3 probably isn't that good.
There's a guide to all the music from the show here: link
At least you can download the songs individually :)
I didnt even know they had a soundtrack?
I feel like a bad fan.
But, hey.
Come on guys, im in Australia!
You over there in the UK are a WHOLE year infront of us people down under!