iPhone Display recorder not recording sound

[Daviddeteo]

Hi im new to this forum
I have iphone 3gs running ios 6.1.6, when i start recording, and test music, it doesnt record music, even in app sound, and disabled mic, too. So what's the problem?

 

[eelw]

Display recorder only records sounds from the mic and not sounds that are playing back on the device.

I'm never been able to find app (AppStore or Cydia) to record sounds directly playing from the device yet.