Program: Nightingale
License: GPLv2
Description: Similar to Songbird, but has a stronger user base and support. 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.
Website: http://getnightingale.com/
I know of Songbird, but it's dead. What's holding this application from becoming portable?