When I connect my iPhone 6 to my PC in order to transfer my music, I am told that the I need the newest edition of iTunes. When I try to download the newest edition of iTunes, I am told that the update is for Windows7 or higher. (I have Windows XP.) Microsoft no longer offers support for Windows XP. How else can I get my music from my PC to my iPhone 6?
If you can't upgrade from Windows XP you could use iExplorer, however I'd strongly recommend upgrading to a newer OS and using iTunes.