Magnetic case - looking for option to disable the device from reacting to the magnet...

[bungeecork]

Hi All, I have a Nexus 7 in a case which has magnets. When I close the lid of the case the screen shuts off, the device locks and the current YouTube video stops playing. I'd like to be able to do shut the lid but not interrupt YouTube, so that I can still isten to YouTube on my headphones even when the lid is closed. Is this possible?