In order to install Amazon Cloud Player with GNOME Software, launch GNOME Software,
search for Amazon Cloud Player and finally click the Install button.
a Linux terminal emulator,
type flatpak install nuvola eu.tiliado.NuvolaAppAmazonCloudPlayer and press the Enter key to install this package.
Launch Amazon Cloud Player
You should be able to find Amazon Cloud Player in a list of installed applications. If not, you may have forgotten
to log out and log in and your desktop environment (Pantheon, GNOME, etc.) has not find out yet
that a new application has been installed.
Alternatively, you can launch Amazon Cloud Player from a terminal:
flatpak run eu.tiliado.NuvolaAppAmazonCloudPlayer