Audio recording problem

[ankurstp]

Hi,
i need help in audio recording.
Actually the code i using is working fine for iphone 3 but in iphone 4 it does not work.
if i record a audio and when i play it does not get played even no other audio/video get played. bt if i did not record audio, every thing play fine.
Please help me its urgent.
I could not figure out where is the problem.

Thanks