Soundcloud artwork downloader
Pass the URL of the track you'd like to download the artwork for. Files will be downloaded to ~/Downloads and will be stored in the form {track name}.jpg.
scar https://soundcloud.com/artist/track
scar --directory ~/Desktop https://soundcloud.com/artist/track
scar --file cover.jpg https://soundcloud.com/artist/track
It's possible this violates Soundcloud's terms of service. I have read through the TOS and while they have restrictions on downloading streams, there is no obvious provision in place for artwork.