To transfer your purchased music:
1. Tap Library > Settings > Purchased Music > Purchase History.
2. Save all of your songs and albums.
Note: Make sure everything was saved by going to Library > Downloads.
3. Connect your smartphone to your PC.
4. Start the file manager.
5. Tap Android > Data > jp.linecorp.linemusic.android > files.
After saving the folder, you’ll be able to move your purchased music files to another device.