If you enable this, then you will be able to configure advance player options, like...

* Title of Audio
* URL of Artwork Image
* Player Color (primary)
* Title Text Color (background)
* Show Speed Icon
* Show Download Icon

BUT...

If you do NOT enable this, then the advanced options will NOT be shown. But the old S3MV player look will be replaced by the new, a bit-more-stylish player that is a little bit wider and taller with a bigger play button, play scrubber and speed icon.