Safari doesn't automatically play your video/music as it does in Chrome.
To enable the sound on the soundtrack previews, please follow the instructions below:
1. Click on “Safari” at the top left hand side in the menu bar and click on “Preferences...” in the drop down menu.
2. Click on the “Website” tab and then click on “Auto Play” on the left hand side. Beside “magisto.com” click on the arrow on the right hand side and choose “Allow All Auto-Play”.
If you've tried this and the issue persists, reach out to Magisto's support https://www.magisto.com/support so we can investigate this on our end.