Re: "Fake tape detectors..."
The Fraunhofer audio forensics, mentioned in the last two paras.
With the combination of looking at background electromagnetic cycles, microphone profiles, and codec characteristics, it's possible to say with a fair degree of certainty that a recording has been tampered with. So, when a site gets sent a "you won't believe what politician X said in this closed meeting" recording, these tools will make it much easier for them to verify whether or not edits have been made.
It will help, hopefully, to avoid the egg on the face when the recording you're claiming to say "of course we don't care about the poor" turns out to be a tampered version of someone saying "of course our opponents would say we don't care about the poor"