I put this here because I couldn't see a forum for dealing with stuff like this.
I just found an (unwanted) audio file converter on my machine. Switch Converter, or some name like that.
This was silently installed on my machine some time in January.
There was also a separate list of 'shortcuts' to programs marketed by this outfit. I have deleted/uninstalled both.
Just a warning that folks may have software from this outfit on their machines without their knowledge.
Look for 'Switch' and/or 'NCH Software' to uninstall/delete.
Roger