My goal is to extract the native audio from an AVI file, reduce the background noise in SoundSoap and then add the audio to the Music track in VideoWave. Muting the native audio should leave me with an edited audio track that is synchronised with the video content. However, when I add the edited wave file to the music track, it is of a shorter duration than the native audio and cannot be synchronised exactly with the video. I've tried extracting the audio then adding it to the music track without any editing in SoundSoap but I still get the same problem. I'd appreciate any suggestions.