One. After the first rerun, it's always a rerun and needs rewound.
I disagree before you can rerun something it has to be rewound!
Ahhhhhhhhhhh....
Well, very few people use tapes anymore, but eventully if they used a disc it would eventually be corroded into dust from over use.
It depends... how many times had the rerun been reran before you inquired about rewound reran reruns? It makes sense if you think about it...