don't you hate that? and if the tint was dark enough, and you couldn't actually see IN your truck.... then you know it was someone who knows it was there, which just makes it worse.
I never, ever had my stereo bumpin or loud in or around my house or anyone elses as I didn't want peeps to know my sh*t was back there.
Chalk it down to experience, get an alarm, new window, and pray you catch the little bastiges trying to sell your stuff. Full coverage insurance is good too.
sorry it happened at all though