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 is the Lumia Video Trimmer app on Lumia phone?
- What can I do with the Lumia Video Trimmer app on my Lumia phone?
- Why can't I cut video clips exactly where I want with Lumia Video Trimmer?
- What kinds of videos can I trim on my Lumia phone?
- Where can I find the trimmed and saved video clips on my Lumia?