If there are no audio files to play and someone tries to access the Playlist link regardless of the player type, they will be greeted with a screen telling them that no files have been added to the playlist.

NOTE:

Tracks that are created in the Playlist Dialog screen that don't have any versions added to them are ignored by the player, and are not loaded into the player. Here's how to setup the Playlist

If there is nothing in the player screen, this also means that the payment buttons for a deposit or approval payment will not appear in the player screen.