Can Adobe Flash Player 12 run on Ubuntu Linux?

Is it true Adobe Flash Player 12 is no longer supported on or does not run on Linux?  I can not get Adobe Flash Player 11 to run my Chinese language software, Chineseclass101 voice recording, on my Ubuntu 13.10 desktop.  Playing of their audio lessons is no problem but recording of my voice is.  What's the most likely source of difficulties?  (A tiny popup window for Adobe Flash "microphone and camera" appear though pushing the "Allow" button does nothing. A microphone is attached and appears to be working for system operations.)