By all means call your state's attorney.
As for the media, if you can get 1 or more people that have also had this happen to them then I think the media would be willing to tell your story.
You could try calling any pawn shops in your area to see if they've recently gotten in a sewing machine. Ask them to call the police and you if they do but you'll probably have to give them the serial # for proof. They won't take property if they know it has been stolen and would appreciate you giving them a heads up.