thank you for playing, it is my first game so bugs are bound to happen and im sorry if you got confused by the lack of guidance from the game itself.
for the issue of the tapes not being playable i am guessing you got 2 of the tapes on the last floor which had spotlights on them...if you've noticed they have sfx and are the only ones that are different in this term. those 2 are fakes, there are 2 tapes in the darkness besides the ones under the spot lights.
again im sorry for how the game turned out to be, i ran out of time and its my first game, i will make sure from the next game forward to bring the best user experience i can.