On two occasions, the tape was replaced. :-) Can't recall at the moment how I came upon the illicit master key that allowed that to occur, but I'm pretty sure I eventually handed that key down to Drew, who remained at the camp in later years, after it was sold.
The two replacement tapes were Van Halen's "5150," and a recording (of beeeej?) saying "Ding-ding, ding-ding, ding-ding," in the same rhythm as the familiar bell. :-)