Please excuse my utter lack of understanding of how these things work, but what exactly is a "bootleg of a concert"? Is it some fan filming the concert? Or is it a "pirated" copy of an official filming?
'Cause in the first instance, wouldn't that fan own the copyright?
"[...] aimed at putting travelers' minds at ease [...]"
No Tim, it's aimed at reminding travelers that there are Bad People out there that will Kill You if you don't let the government do whatever they want, For Your Safety. And also Think Of The Children (unless an agent is groping said children at the time, then you should think about The Flag for a couple of minutes).
The money was used as it was supposed too, I guess. The problem is that TSA has already managed to convince Congress that they should have all the money, so they just can't find anywhere to actually spend it anymore.
Since the call was "ongoing" when he called the police, odds are they got an earful of murderin'-plans. ;-)
And no, it's not hearsay. Hearsay is if you or I would testify, the man is most definitely allowed to testify about what he heard. True, it's not as good as an actual recording, but it should be enough.