This is just a summary from the day the Germans found out about the bomb. The full transcripts are available.[1][2][3] Unfortunately, the recordings were not kept. They were not on magnetic tape; they were recorded on shellac records. Only the interesting parts were transcribed.
The conclusion of the US Alsos mission to investigate the German bomb program: "It was so obvious the whole German uranium set up was on a ludicrously small scale. Here was the central group of laboratories, and all it amounted to was a little cave, a wing of a small textile factory, a few rooms in an old brewery. To be sure, the laboratories were well equipped, but compared to what we were doing in the United States it was still small-time stuff. Sometimes we wondered if our government had not spent more money on our intelligence mission than the Germans had spent on their whole project."
[1] https://pubs.aip.org/DocumentLibrary/files/publishers/pto/co...
[2] https://pubs.aip.org/DocumentLibrary/files/publishers/pto/co...
[3] https://pubs.aip.org/DocumentLibrary/files/publishers/pto/co...