Do you get a click from the starter or anything? Usualy you get warning if its the oil pump, noisy lifters, heavy tapping, oil light?!? and eventualy the bottom end will start clattering like crazy... THEN i would expect it to seize.
What sort of funny noise? usualy it will be a squeeky clattering knocky sound with accute pump failure. As said before, try to rock the car in gear.