If you downloaded a song from site and it will not play where could legally download that one for free without registering?

There are a number of sites where you can legally download music for free without registering. Some popular sites include:

- SoundCloud: SoundCloud is a music-sharing platform that allows users to upload, share, and stream music. Many artists use SoundCloud to distribute their music for free, and you can download their songs without creating an account.

- Bandcamp: Bandcamp is a platform that allows musicians to sell their music directly to fans. However, many artists also offer their music for free on Bandcamp. You can download these songs without creating an account.

- Free Music Archive: The Free Music Archive is a non-profit organization that curates and distributes free music. You can download thousands of songs from the FMA without creating an account.

- Audiomack: Audiomack is a music-streaming platform that allows users to upload, share, and stream music. Many artists use Audiomack to distribute their music for free, and you can download their songs without creating an account.

- Jamendo: Jamendo is a music-sharing platform that offers free music from independent artists. You can download songs from Jamendo without creating an account.