Be warned, this is as much a spoiler as it is a theory. 

Bruno Heller is not a moron. Here is why Patrick didn't take the recording of the list's voices to Rosalynd Harker. When he was showing the video of Lorelei reading the list to Lisbon, he got a case from Bertram on the SAME DAY. On the SAME DAY, Patrick finds out who Redjohn is. Conjecture? No. Am I going to type an explanation either? No. 

I've seen this theory link posted like 200 times. Sorry to pee anyone off but here is the full spoiler.

http://www.whoisredjohn.com/See-a-theory-Red-John/6373