Here is a guide to install Nightingale music player on Ubuntu 13.04, you can install Nightingale by adding the “Nightingale” team PPA.
Nightingale is a completely free, open source audio player and web browser based on the Songbird media player source code. As such, Nightingale’s engine is based on the Mozilla XULRunner with libraries such as the GStreamer media framework and libtag providing media tagging and playback support, amongst others. Since official support for Linux was dropped by Songbird in April 2010 Linux-using members of the Songbird community diverged and created the project. Contrary to Songbird, which is primarily licensed under the GPLv2 but includes artwork that is not freely distributable, Nightingale is entirely free software, licensed under the GPLv2, with portions under the MPL and BSD licenses. Visit the Nightingale Homepage.
To add the PPA and install Nightingale open a terminal window (press Ctrl+Alt+T) and copy+paste the following lines:
sudo add-apt-repository ppa:nightingaleteam/nightingale-release -y
sudo apt-get update && sudo apt-get install nightingale -y
When installed you can close the terminal window and to start Nightingale press the SuperKey and type: nightingale
To add the launcher for Nightingale to the launcher panel click with your right mouse button on the Nightingale icon and select Lock to launcher.