(iOS): A file manager that includes a browser often used for downloading audio files.
or VidMate (Android): Popular third-party apps for downloading media. Скачать mp3 ripper
If you just need to convert a single link or file without installing anything: (iOS): A file manager that includes a browser
: Supports a huge range of formats and is very secure. Скачать mp3 ripper
Could you tell me you are using (Phone, PC?) and where you are trying to rip/download the music from ? This will help me give you the exact steps or a safer link.
Be careful with sites that show heavy pop-ups or "Download" buttons that don't match the site's style, as these can often lead to malware.