i am a sound engineer who works on full length features. i’ve been using WaveSurfer software for audio editing but today when i was making a deeper sound of one of our actor. if changed it to a sweet sound . is it mean that there may be some virus in it that’s why it is doing everything opposite .my version of wave surfer software is 7.0 . its the previous version to latest one. should i again download it . i need your suggestion first because it is very expensive software to downloads.