How to re-record sound?
Open the AVI in AutoScreenRecorder Video Editor. Choose “Remove Audio” from the “Edit Audio” menu, that will clear the current audio on the video. Choose “Add Audio Wave File…” from the “Edit Audio” menu and add your .WAV file to the video. If you need a new sound file, choose “Record Sound…” and record your sound. You may want to choose “Select Audio Input Device…” to make sure the sound source, such as from your speakers or microphone.