To watch the 24 Hour Loupe Art + Music TV Channel:

Launch Samsung TV Plus

Tune in to CH 1220 in the Lifestyle category 

To watch Loupe Art (without the synchronized music):

Launch the App Store on your Samsung TV and search for "Firefox"

Install and launch the Firefox TV App on your device

Enter player.loupeart.com as the URL

Sign in or sign up for a FREE account and select the art collection of your choice