There are 4 ways to upload your local files:

1. Enter into the editing page and it will pop up a window for you to upload your local files.

2. Later, you can click the Media button on the left side and click to upload files (videos, images, and music files) from your computer, phone, Google Drive, etc.

You can also record the screen or record with a webcam directly.

3. In the timeline, you can click the audio track to upload your music immediately.

4. You can drag & drop files from your computer to Media or Timeline directly.