Technical information

Dependencies

Python 2.7 or 3.x

PyGtk or PyGI

Gtk2 or Gtk3

Requests/urllib3

PIL/Pillow

Soft dependencies

Python-LXML

Python-PyQuery

Audacious/VLC or any other player

Streamripper or fIcy

youtube-dl

fonts: Symbola/Unifont for some UI parts

Configuration files

/home/$USER/.config/streamtuner2/: Corresponds to the XDG_CONFIG_HOME setting. All ST2 configuration settings are contained within here and are in JSON format.
~/.config/streamtuner2/settings.json: General runtime options, plugin settings, and configured audio players.
~/.config/streamtuner2/window.json: Saved window sizes, list widths.
~/.config/streamtuner2/state.json: Last category in each channel tab.
~/.config/streamtuner2/bookmarks.json: Is a separate cache file for your bookmarked/favourite radio stations.
~/.config/streamtuner2/cache/***.json: JSON files for stream lists in each channel.
~/.config/streamtuner2/icons/*.png: Holds downloaded favicons for station homepages.
~/.config/streamtuner2/plugins/*.py: Contain downloaded contrib/ plugins.

Installation spread

/usr/bin/streamtuner2: Associates the main binary.
/usr/share/streamtuner2/: Contains the individual ST2 python modules, and plugins in channels/. Also packages in pyquery/, but which is only used if the according modules aren't installed by the distribution.
/usr/share/doc/streamtuner2/: Contains the README, and Mallard/gnome-help/yelp files under help/.

Public Domain

The majority of code distributed with ST2 is placed into the Public Domain; meaning no licensing requirement and all code can be copied, modified and distributed unrestrictively.

The bundled kronos.py and requests/ library are NOT however.