Earl,Earl Bonovich said:The buffer does not empty...
But the progress bar "will" change, to reflect the current show.
So it will "look" like the buffer emptied , but it really didn't.
But then is there any way to rewind back to the beginning of the 90 minutes or are you limited to the current current show. I've never actually tried this, so pardon my ignorance. The only time I've seen the buffer full was during a movie.