iHeartRadio for business is actually run on the Mood Media platform. Mood Media owns Muzak, DMX, AEI, Trusonic and a few other platforms, including their namesake Mood. Mood is known for leasing their players to businesses, and they can be used to play a wide variety of music from their various channels that offer different genres or themes, and they can also be dayparted to play different music channels throughout the day based on the needs of a particular business. (a restaurant and bar, for instance, might play one particular music channel for the breakfast seating, another for lunch, another for dinner and yet another for late night, and all that can be automated). Included in the cost of the music service, Mood customers pay the licensing and rights fees for the music, and the Mood boxes update via an internet connection so the music is kept current.
I was once in an establishment a few years ago that didn't have their Mood player connected to the internet, and the current standards it was playing were probably 4 years old at that point. It was basically stuck in time and quite dated at that point as it was playing all the top rated music from that time period in relatively heavy rotation.