I figured it out! A million hours later and 4 in the morning but I figured it out. So I did everything updated my iPhone 7 newest software same w iTunes on my windows computer everything. Nothing worked. Until I had to go to my actual iPhone go to settings, music, then turn off iCloud Music Library and enable home sharing. Then once I did that I went back onto my computer went to iTunes and synced manually. All I did was on iTunes go to your phone section and click sync. Once I did so I was then able to add music. I dragged the music to the device and it was finally added. I domt know what's going on w apple and why it's become so much harder to sync music. It was so much easier back in the day. Anywho I'm just glad I finally figured it out. Now I can listen to my hypnobirthing tracks on my phone.