How to Install Nuvola Player 4.5 in Ubuntu 16.04 & higher

Nuvola Player, cloud music integration for Linux desktop, has reached the 4.5 release a few days ago. Here’s how to install it in Ubuntu 16.04 and higher using the flatpak packages.
Nuvola Player 4 was forked from the release 3 with many new features & enhancements. The latest Nuvola 4.5 was released on June 24th, 2017. See more details.

1. Install Flatpak and Desktop Portal service
For Ubuntu 17.04 and higher, adding the PPA is not required (skip step 1) since Flatpak is available in Ubuntu universe repository.

1. Open terminal via Ctrl+Alt+T or by searching “Terminal” form app launcher. When it opens, run command to add flatpak PPA:

   sudo add-apt-repository ppa:alexlarsson/flatpak

   
2. Then update and install flatpak via commands:

   sudo apt-get update
   
   sudo apt-get install flatpak xdg-desktop-portal-gtk

3. Restart your computer is required.

2. Remove old Nuvola installation if any via commands:

sudo apt-get remove nuvolaplayer*
rm -rf ~/.cache/nuvolaplayer3
rm -rf ~/.local/share/nuvolaplayer3
rm -rf ~/.config/nuvolaplayer3
rm -f ~/.local/share/applications/nuvolaplayer3*

3. Install Nuvola Apps run time via command:

flatpak install --from https://nuvola.tiliado.eu/eu.tiliado.Nuvola.flatpakref

Answer y when you’re asked and hit Enter.
4. Finally install each web player via command:

flatpak install --from https://nuvola.tiliado.eu/eu.tiliado.NuvolaAppSpotify.flatpakref

replace NuvolaAppSpotify in the code via following ones for other services:

• NuvolaApp8tracks
• NuvolaAppAmazonCloudPlayer
• NuvolaAppBandcamp
• NuvolaAppDeezer
• NuvolaAppGoogleCalendar
• NuvolaAppGooglePlayMusic
• NuvolaAppGroove
• NuvolaAppJango
• NuvolaAppKexp
• NuvolaAppLogitechMediaServer
• NuvolaAppMixcloud
• NuvolaAppOwncloudMusic
• NuvolaAppPlex
• NuvolaAppSiriusxm
• NuvolaAppSoundcloud
• NuvolaAppTunein
• NuvolaAppYandexMusic
• NuvolaAppYoutube

After installed an app, log out and back in so you’re able to launch Nuvola app from Unity Dash, Gnome launcher or other app launcher.
Uninstall:
To uninstall the flatpak packages, simply run commands (use flatpak list to get a list of installed flatpak apps):

flatpak uninstall eu.tiliado.Nuvola

To remove flatpak, run command:

sudo apt remove --autoremove flatpak

And the PPA can be removed via Software & Updates utility under Other Software tab.