I changed computers and on the old audacity was an effects generater that would add crackles etc like an only 78 or 45 etc - I cant see it on the new version or anywhere to download it as a plug in - can anyone help please as I need this function ……
Possibly you are thinking of Izotope vinyl … https://www.izotope.com/en/products/vinyl.html
( or Plektron’s Vinylizer VST plugin, which has a stronger effect )