talk about a pain in the kiester . . .
I went thru this right around mid December (yeah, merry christmas). Fortunately, the rig wasn't stolen. Unfortunately, I hadn't figured out which button on my new keyless door locks was the "lock" side. Even more unfortunate, I'd come home from doing a little shooting and had a couple pistoleros in there. Someone hit the jackpot. Thankfully, a good relationship with my insurance agent made filing the loss relatively painless. Notice I did not say fast. Took a good three months to get all my stuff replaced (minus the deductible, of course). Receipts were not necessary, but they helped. Most of the stuff I had, I'd had it too long to have kept receipts around. Of course, you don't want to get too greedy, and you are going to miss some things as you start looking for said items later on.
Another hitch: I was told by my agent that my policy did NOT cover the CD's that were stolen, nor would it cover an aftermarket stereo. This may be something you can change if you alter the actual policy, but I'm not sure.