Freya Gong

If you want to play Amazon Music on LG WEBOS, you can try to download Amazon Music to computer with this Amazon Music Downloader, and then move these music files to any device you want.  

Wonderful tips.

I am a premium subscriber of Spotify, but streaming music services like Spotify and Amazon Music are troublesome because they are all protected by DRM. Therefore, we must use third-party software to remove DRM and download songs.
I have used this Spotify Music Converter to successfully download songs to my computer. If you want to move Spotify Music to other devices or other apps, you can use the converter to download the songs to your computer first, and then move them manually To the app or device you need.

Same question as you. I hope to stream Amazon Music too!