If you are using external devices or folders (other than "Music") to synchronise music to your phone, you have to enable access on a Mac software. To do this, go to File > Allow Access to Folder.
- What type of data can I transfer from my old phone to my new Lumia Windows Phone 8?
- How can I transfer my contacts, messages, calendar entries or photos to my Lumia?
- I have forgotten my Nokia account password
- I have forgotten Wallet PIN on my Lumia phone
- Audio quality is poor when I listen to music using Bluetooth