2. Tap on the "Library" tab.
3. Tap on the "Songs" tab.
4. Tap on the "+" button in the top-right corner of the screen.
5. Select the source you want to add songs from. You can choose from your device's music library, a cloud storage service, or a URL.
6. Select the songs you want to add.
7. Tap on the "Add" button.
The songs will be added to your Rig 'N' Roll library and will be available to play in the future.