To adjust a portion of the soundtrack you'd like to include in your project to a specific part of it, you are welcome to follow the steps below:
- Select and add the soundtrack from the Music section of the menu at the bottom of the screen: it will appear under the pictures timeline, as a purple bar.
- Tap on one of the side handles of the purple bar, hold your finger, and move it to the left or to the right: this way you can set the length of the soundtrack and select the part of it you'd like to include in your project.
- Then, by pressing your finger on the purple bar (not on one of the side handles) and moving it to the left or to the right, you can move the whole soundtrack so that it matches the right portion of your project.
If you want to add more than one song, it will be enough to repeat the process with all the soundtracks involved.