Same thing happened to me a few years ago where my parcel was intercepted by someone in this country and my goods were swopped with items of no use,sender was 100% reliable of whom I knew personally,the items replaced in package were UK items.
On another note when buying records in the U.S. ,have you noticed sometimes the name of the record is on the package,surely this makes your items more at risk if the 'perp' knows his stuff.