YOU MUST HAVE N7PLAYER 2.4 or above!
Please check the n7player version in Options -> About.

Flat and minimal skin with orange accents. Requires n7player Music Player, available on the Google Play. Improves n7player graphics quality to native Full HD quality (1920x1080), xxhdpi.

INSTALLATION INSTRUCTIONS:
The skin pack isn't visible in the phone launcher. To enable it, Select Skin from the Menu and choose that skin.