The holotape will only work once. If you have played it, and the terminal replied "access granted", it has unlocked the safety deposit box already. If you try to replay the tape to get the terminal to repeat "access granted", it will tell you unauthorized voice.
It must be glitched then, 'cause the safe is still locked, and the terminal hasn't given an access granted, although it did show both holotapes encoded. first one was, "right password, voice unrecognized". Playing the locker holotape, of the Chinese agent's voice and password, also was rendered as "right password, voice unrecognized". That is where I think the glitch is.
I chucked that run through, since I was doing it before the mansion, and started from the boat landing again. I see there is a console remedy, should I not be able to complete this, but I wanted to make sure I wasn't just missing a clue or sumpin'. Thanks for taking the time to help. :thumbsup: