Looking at the link provided by Nontek, there are some websites that are getting a bad reputation for downloading unwanted items on a computer. cnet and softonic might need a working and check anti device, before downloading anything from those sites.
Audacity is the good free one. Just be careful where you download from, do a custom install and untick/deselect any 'extras' offered (as per you would do with any free program these days). From click here or download from filehippo and choose 'Direct Download' (not the download manager button as I think that gives you extra extras?)