The record player and albums had to have arrive in some kind of container, otherwise it wouldn’t survive the sea water. You also have a knife with you, attach that to a decent halfway straight branch with dried plant vines, now you have a metal tipped spear for sea based or land based food. You also have a flashlight, when it gets dark enough or twilight, fish will be attracted to the light from it, then you have seafood. Look for dime size holes on the beach where the ocean tide leaves the sand wet. Dig below the hole about 6 to 8 inches and you will find clams, or crabs and sometimes sea turtle eggs. You can eat them but save some for bait for catching fish. If you are patient enough, you can fashion fish hooks out of the clam shells. Fishing lines can be made from small diameter plant vines or from knot tied sun dried sinews of wild pigs that that you might have speared. You can survive for quite a while.