In the Amazon Music Windows App you can select all of the files in a playlist, right click and add to a new playlist. The app will popup and tell you how many duplicates there are and ask if you’d like them to be filtered out. Delete the original playlist. Rename the new playlist. Rejoice in a lack of duplicates. How to Download Music from Amazon Prime Music with Online Recorder. Of course, you could also take advantage of the online audio to record the favorite music from Amazon Prime if you don’t want to download and install any software on your computers. However, you are not allowed to edit downloaded music files with the online audio recorder.