freeyourmusic

Install command: 
brew install --cask freeyourmusic

Name: FreeYourMusic

Move playlists, tracks, and albums between music platforms

https://freeyourmusic.com/

Cask JSON API: /api/cask/freeyourmusic.json

Cask code: freeyourmusic.rb on GitHub

Current version: 9.16.0

Current version requires: macOS >= 10.15

Versions:

Intel tahoe 9.16.0
sequoia 9.16.0
sonoma 9.16.0
ventura 9.16.0
monterey 9.16.0
big sur 9.16.0
catalina 9.16.0

Analytics:

Installs (30 days)
freeyourmusic 13
Installs (90 days)
freeyourmusic 25
Installs (365 days)
freeyourmusic 96