Over-write audio using superpowered SDK

  android, audio-processing, c++, superpowered

I am using a superpowered recorder for recording, I am recording audio then adding track, So adding the track if I edit the first track and rerecord on first track it’s mixing the audio with the old one instead of overwriting the audio. Is there any function available in superpowered SDK to overwrite the audio?. Any help would be much appreciated.

Thank you.

Source: Windows Questions C++