> What happens if I rename a CAD file to MP3? "This kind of file is for a [computer-aided design system]. It is not an [MP3 music] file and so it cannot be use

> What happens if I rename a CAD file to MP3? "This kind of file is for a [computer-aided design system]. It is not an [MP3 music] file and so it cannot be used by [music playing software]. Would you still like to rename the file?"