In the most recent version of Apples Safari 11 browser, Apple has taken the action of blocking auto-playing content with audio. The StreamSpot Player would be included in this content. In order to ensure viewers are able to view the content as easily as possible when going to your StreamSpot player, we've added functionality for the player to disable Auto-Play on Safari browsers when it's loaded. When a viewer loads your player in Safari they will have a Play button that shows up, once clicked the content will stream normally.
If you have any questions on this please reach out to firstname.lastname@example.org and we are happy to assist.