FREE Creative Commons License. You can use this music for free in your multimedia project (online videos (Youtube, Facebook,), websites, animations, etc.) as long as you credit slicelive.com (in the description for a video). Jun 01, · On your iPhone, open your project in the iMovie app. Tap the Add button. Select iCloud Drive. Tap on the audio item in question to add it to your project. How to use iCloud Music Library to add royalty-free music to iMovie for iOS. If you'd like to use songs for a project while offline, you can add your royalty-free tracks to iCloud Music Author: Serenity Caldwell. Try it free. Listen to songs and albums by Public Domain Royalty Free Music, including "Amazing Grace (feat. Public Domain Royalty Free Music)," "Soundscape Atmosphere Sfx Big Open Guitar Chords (feat.