Starting with version 2.0 of Aqualung (released in February 2025) the program depends on the Gtk3 toolkit and uses CSS for (minimal) theming of its interface. The previously existing skin support was removed, and a single switch (the “Dark theme” checkbox on the General tab of the Settings dialog) allows the user to request a dark appearance. This new, basic look is demonstrated below; click on the pictures to view them in full size.

Default theme

Dark theme

Legacy skins

The below screenshots were made with earlier versions of Aqualung (using the Gtk2 toolkit), and demonstrate the program’s appearance with some of the skins. These are retained here, as they serve as a nice gallery of program features as well. Click on the pictures to view them in full size.

Default skin (Music Store builder)

Woody skin (File Info and volume calculation)

Metal skin (Playlist featuring Album mode)

Dark skin (LADSPA plugin support)

Plain skin (Settings dialog and album cover)

Ocean skin (Search in Music Store)