In one clip from a secret audio recording obtained by Channel 4 News, Rupert Murdoch is heard branding police "totally incompetent" and damning the Scotland Yard inquiry into corrupt payments to public officials.
"It's the biggest inquiry ever, over next to nothing," he says.
Hear more of the recordings at Channel 4 News.
A News Corp statement said Mr Murdoch was showing "understandable empathy" to his staff.
More top news
Grant Shapps and Lord Feldman should stand down for their alleged inaction over bullying claims, father of activist who killed himself says.
Scans show there is a 90% chance Tutankhamun's tomb contains a hidden chamber - the last resting place of Queen Nefertiti.
A pregnant woman suffered broken bones and is to undergo surgery after being thrown on to the bonnet of a car in a collision.