That's nonsense.
1. Of course the Allies knew of the Holocaust.
This has been well known for decades. The first reports of mass killings of Jews in the Soviet Union by Einsatzgruppen appeared in American newspapers as early as October and November, 1941 -- well before the start of this spying program (and before the Wansee Conference, which really started the Holocaust). While various reports of a more formalized extermination program filtered through, these were confirmed and passed on to the President on 24 November 1942. Again, this has been public knowledge (and many books have been written about this) for decades.
2. The conspiracy theory is invalid, because knowledge was irrelevant.
While the mechanisms of the Holocaust were for the most part poorly known by the Allies (not a single actionable specific appears in these transcripts), even if the Allies had known absolutely every last detail about the Holocaust, there's really nothing they could have done to stop it that they didn't do. In 1942, remember, the Nazis were sinking American ships within sight of New York -- all the knowledge in the world couldn't have saved a single Jew.
3. These "secret" transcripts aren't new.
Nor are they particularly significant. Note that this article celebrates the publication of a new translation of them into English, not their declassification. They have been declassified and available to scholars for decades -- in fact, this isn't even the first translation available in English (one was published in 1993).
After Rwanda and Cambodia and as the Democrats contemplate allowing the slaughter of Iraqis by the million. Its our own humanity that is flawed.
Shame on you for saying there is nothing they could have done. Auschwitz ran almost to the last days of the war pumping out burnt offerings.
If someone gave a damn, they could have put it out of business along with its sister facilities. There is nothing they cared to do, it wasn't a priority.
We shouldn't say never again. We should say over and over again.