I've received a few queries on this recording over the past 24hrs, and some from PPRuNe members...
I saw the link at a local forum yesterday, and a few colleagues took it to bits, and we seem to conclude that this recording is real, and most likely to come from the cockpit area mic... the gaps between the parts of the conversation matches the FDR and whatever transcript was in the accident report.
Today I ran into a couple of ex Adam Air pilots, and they wanted to hear this recording. They did say it was the right voices for the Capt. and F/O. The sadness in their faces when hearing this was... beyond words, especially the guy who flew the jet a few days beforehand... with the same problem... He was in the process of quitting when the crash happened.
The media here have put out a simulation of the accident based on this recording and the FDR data in the accident report... dunno how accurate their potrayal is...
PK-KAR