Samsung Galaxy Edge (Should also work for S6)
How to Save a Music File as a Text Alert Tone
1. Go to ‘My Files’ Folder
2. Scroll down to ‘Local Storage’
3. Click on ‘Device Storage’
4. Scroll down to ‘Music’
5. Click on ‘More’
6. Click on ‘Edit’
7. Select the Song/s that you want to add to...