The application is not available to download in the Microsoft Store. ASUS states they are "working" with Microsoft to get the link live. Microsoft was useless when I contacted them. It's been going on for almost a month now and I'm rather disappointed it's unavailable to install on the device as it's a well advertised feature.
Bought the laptop from Best Buy and it came without this application preloaded onto the laptop.
The said link in question that shows the application is no longer available. Perhaps someone from Spotify can get this application up for download as the Screen Pad is awesome and having this available would be great! Thanks!