Sorry to hear about this mate. I hope it doesn't cost you too much to sort out.
2 weeks ago someone stole my fiance's stereo out of her mk4, except they damaged absoluelty... nothing! They carefully removed all the trim, the stereo and cage then sorted through her cd's deciding which ones to steal and which ones to leave
Makes me realise how lucky we were. It only cost me £80 for a new head unit.
I really hate theiving scum, but I hate malicious little f**kers even more. If they can't get something these days, they just smash it up. Makes me wonder whether car security is worth the hassle