That's not what happened. They didn't tell the CIA or FBI anything. ABC provided them an edited copy of the tape, and ABC edited it for political reasons so as not to influence the election.
As I've pointed out in a number of responses, a federal felony has been committed, and I suggest ABC's lawyers check the relevent provisions of the PATRIOT Act.
There is no way that ABC news edited the tape. I don't believe it for a second.